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Vol. 29 January-April 1926 Editorial Board William H. Brown, Ph.D., Editor R.C. McGregor, A.B., Associate Editor Anna B. Banyea, Copy Editor Chemistry Albert H. Wells, A.B.; T. Dar Juan, Phar.D. F. Agcaoili, A.B. A.S. Arguelles, B.S.; Walter L. Brooke, M.S.; F.D. Reyes, B.S. A.P. West, Ph.D., Granville A. Perkins, Ph.D. Geology Victoriano Elicaño B.S.; Leopoldo A. Faustino, E.M., Ph.D. Experimental Medicine Otto Schobl, M.D.; H.W. Wade, M.D.;F.G. Haughwout Edward B. Vedder, M.A., M.D., D.Sc.; A.P. Hitchens, M.D. Stanton Youngerg, D.V.M.; Arturo Garcia, M.D. Daniel De La Paz M.D.; Cristobal Manalang, M.D. Clinical Medicine Liborio Gomez M.D., Ph.D.; F. Calderon, L.M. Jacobo Fajardo, M.D.; Vicente de Jesus, M.D.; Jose Albert, M.D. H.Lara, M.D.; Jose Rodriguez, M.D. Botany L.M. Guerrero, Phar D.;C.F. Baker, M.A.; A. F. Fischer, C.E., M.F. J.K. Santos, Ph.D.; P.L. Sherman,Ph.D.; Eduardo Quisumbing, Ph.D. Joaquin Marañon , Ph.D.; Rafael B. Espino, Ph.D. Zoology Albert W. Herre, Ph.D. .; W. Schultze; C.F. Baker, A.M Leopoldo B. Uichanco, Sc.D.; Marcos A. Tubangui, D.V.M.; Manuel D. Sumulong, M.S., D.V.M

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Vol. 29 January-April 1926

Editorial Board

William H. Brown, Ph.D., EditorR.C. McGregor, A.B., Associate Editor

Anna B. Banyea, Copy Editor

ChemistryAlbert H. Wells, A.B.; T. Dar Juan, Phar.D. F. Agcaoili, A.B.

A.S. Arguelles, B.S.; Walter L. Brooke, M.S.; F.D. Reyes, B.S.A.P. West, Ph.D., Granville A. Perkins, Ph.D.

GeologyVictoriano Elicaño B.S.; Leopoldo A. Faustino, E.M., Ph.D.

Experimental MedicineOtto Schobl, M.D.; H.W. Wade, M.D.;F.G. Haughwout

Edward B. Vedder, M.A., M.D., D.Sc.; A.P. Hitchens, M.D.Stanton Youngerg, D.V.M.; Arturo Garcia, M.D.

Daniel De La Paz M.D.; Cristobal Manalang, M.D.

Clinical MedicineLiborio Gomez M.D., Ph.D.; F. Calderon, L.M.

Jacobo Fajardo, M.D.; Vicente de Jesus, M.D.; Jose Albert, M.D.H.Lara, M.D.; Jose Rodriguez, M.D.

BotanyL.M. Guerrero, Phar D.;C.F. Baker, M.A.; A. F. Fischer, C.E., M.F.

J.K. Santos, Ph.D.; P.L. Sherman,Ph.D.; Eduardo Quisumbing, Ph.D.Joaquin Marañon , Ph.D.; Rafael B. Espino, Ph.D.

ZoologyAlbert W. Herre, Ph.D. .; W. Schultze; C.F. Baker, A.M

Leopoldo B. Uichanco, Sc.D.; Marcos A. Tubangui, D.V.M.; Manuel D. Sumulong, M.S., D.V.M

AnthropologyH.O. Beyer, M.A.; Otto Johns Scheerer, M.A.

Vol. 31 September - December 1926

Editorial Board

William H. Brown, Ph.D., EditorR.C. McGregor, A.B., Associate Editor

Anna B. Banyea, Copy Editor

ChemistryAlbert H. Wells, A.B.; T. Dar Juan, Phar.D. F. Agcaoili, A.B.

A.S. Arguelles, B.S.; Walter L. Brooke, M.S.; F.D. Reyes, B.S.A.P. West, Ph.D.

GeologyVictoriano Elicaño B.S.; Leopoldo A. Faustino, E.M., Ph.D.

Experimental MedicineOtto Schobl, M.D.; H.W. Wade, M.D.;F.G. Haughwout

Edward B. Vedder, M.A., M.D., D.Sc.; A.P. Hitchens, M.D.Stanton Youngerg, D.V.M.; Arturo Garcia, M.D.

Daniel De La Paz M.D.; Cristobal Manalang, M.D.

Clinical MedicineLiborio Gomez M.D., Ph.D.; F. Calderon, L.M.

Jacobo Fajardo, M.D.; Vicente de Jesus, M.D.; Jose Albert, M.D.H.Lara, M.D.; Jose Rodriguez, M.D.

BotanyL.M. Guerrero, Phar D.;C.F. Baker, M.A.; A. F. Fischer, C.E., M.F.

J.K. Santos, Ph.D.; P.L. Sherman,Ph.D.; Eduardo Quisumbing, Ph.D.Joaquin Marañon , Ph.D.; Rafael B. Espino, Ph.D.

ZoologyAlbert W. Herre, Ph.D. .; W. Schultze; C.F. Baker, A.M

Leopoldo B. Uichanco, Sc.D.; Marcos A. Tubangui, D.V.M.; Manuel D. Sumulong, M.S., D.V.M

AnthropologyH.O. Beyer, M.A.; Otto Johns Scheerer, M.A.

Vol. 33 May - August 1927

Editorial Board

William H. Brown, Ph.D., EditorR.C. McGregor, A.B., Associate Editor

Anna B. Banyea, Copy Editor

ChemistryAlbert H. Wells, A.B.; T. Dar Juan, Phar.D. F. Agcaoili, A.B.

A.S. Arguelles, B.S.; Walter L. Brooke, M.S.; F.D. Reyes, B.S.A.P. West, Ph.D.

GeologyVictoriano Elicaño B.S.; Leopoldo A. Faustino, E.M., Ph.D.

Experimental MedicineOtto Schobl, M.D.; H.W. Wade, M.D.;F.G. Haughwout

Edward B. Vedder, M.A., M.D., D.Sc.; A.P. Hitchens, M.D.Stanton Youngerg, D.V.M.; Arturo Garcia, M.D.

Daniel De La Paz M.D.; Cristobal Manalang, M.D.

Clinical MedicineLiborio Gomez M.D., Ph.D.; F. Calderon, L.M.

Jacobo Fajardo, M.D.; Vicente de Jesus, M.D.; Jose Albert, M.D.H.Lara, M.D.; Jose Rodriguez, M.D.

BotanyL.M. Guerrero, Phar D.; A. F. Fischer, C.E., M.F.

J.K. Santos, Ph.D.; P.L. Sherman,Ph.D.; Eduardo Quisumbing, Ph.D.Joaquin Marañon , Ph.D.; Rafael B. Espino, Ph.D.

ZoologyAlbert W. Herre, Ph.D. .; W. Schultze; C.F. Baker, M.A.

Leopoldo B. Uichanco, Sc.D.; Marcos A. Tubangui, D.V.M.; Manuel D. Sumulong, M.S., D.V.M

AnthropologyH.O. Beyer, M.A.; Otto Johns Scheerer, M.A.

Vol. 34 September – December 1927

Editorial Board

William H. Brown, Ph.D., EditorR.C. McGregor, A.B., Associate Editor

Anna B. Banyea, Copy Editor

ChemistryAlbert H. Wells, A.B.; T. Dar Juan, Phar.D. F. Agcaoili, A.B.

A.S. Arguelles, B.S.; F.D. Reyes, B.S.; A.P. West, Ph.D.Maria Y. Orosa, Ph.C., M.S.

GeologyVictoriano Elicaño B.S.; Leopoldo A. Faustino, E.M., Ph.D.

Experimental MedicineOtto Schobl, M.D.; H.W. Wade, M.D.;

Edward B. Vedder, M.A., M.D., D.Sc.; A.P. Hitchens, M.D.Stanton Youngerg, D.V.M.; Arturo Garcia, M.D.

Daniel De La Paz M.D.; Cristobal Manalang, M.D.Raymond A. Kelser D.V.M., A.M., Ph.D.

Earl B. McKinley, A.B., M.D.

Clinical MedicineLiborio Gomez M.D., Ph.D.; F. Calderon, L.M.

Jacobo Fajardo, M.D.; Jose Albert, M.D.; H. Lara, M.D.Jose Rodriguez, M.D.

BotanyL.M. Guerrero, Phar D.; A. F. Fischer, C.E., M.F.

J.K. Santos, Ph.D.; P.L. Sherman,Ph.D.; Eduardo Quisumbing, Ph.D.Joaquin Marañon , Ph.D.; Rafael B. Espino, Ph.D.

ZoologyAlbert W. Herre, Ph.D. .; Leopoldo B. Uichanco, Sc.D.

Marcos A. Tubangui, D.V.M., Manuel D. Sumulong, M.S., D.V.M

AnthropologyH.O. Beyer, M.A.; Otto Johns Scheerer, M.A.

Vol. 35 January – April 1928

Editorial Board

William H. Brown, Ph.D., EditorR.C. McGregor, A.B., Associate Editor

ChemistryA.P. West, Ph.D.; T. Dar Juan, Phar.D. F. Agcaoili, A.B.

A.S. Arguelles, B.S.; F.D. Reyes, B.S.Maria Y. Orosa, Ph.C., M.S.

GeologyVictoriano Elicaño B.S.; Leopoldo A. Faustino, E.M., Ph.D.

Experimental MedicineOtto Schobl, M.D.; H.W. Wade, M.D.;

Edward B. Vedder, M.D., D.Sc.Stanton Youngerg, D.V.M.; Arturo Garcia, M.D.

Daniel De La Paz M.D.; Cristobal Manalang, M.D.Earl B. McKinley, M.D.

Clinical MedicineLiborio Gomez M.D., Ph.D.; F. Calderon, L.M.

Jacobo Fajardo, M.D.; Jose Albert, M.D.; H. Lara, M.D.Jose Rodriguez, M.D.

BotanyL.M. Guerrero, Phar D.; A. F. Fischer, C.E., M.F.

J.K. Santos, Ph.D.; P.L. Sherman,Ph.D.; Eduardo Quisumbing, Ph.D.Joaquin Marañon , Ph.D.; Rafael B. Espino, Ph.D.

ZoologyAlbert W. Herre, Ph.D. .; Leopoldo B. Uichanco, Sc.D.

Marcos A. Tubangui, D.V.M., Manuel D. Sumulong, M.S., D.V.M

AnthropologyH.O. Beyer, M.A.; Otto Johns Scheerer, M.A.

Vol. 36 May-August 1928

Editorial Board

William H. Brown, Ph.D., EditorR.C. McGregor, A.B., Associate Editor

ChemistryA.P. West, Ph.D.; T. Dar Juan, Phar.D. F. Agcaoili, A.B.

A.S. Arguelles, B.S.; F.D. Reyes, B.S.Maria Y. Orosa, Ph.C., M.S.

GeologyVictoriano Elicaño B.S.; Leopoldo A. Faustino, E.M., Ph.D.

Experimental MedicineOtto Schobl, M.D.; H.W. Wade, M.D.;

Stanton Youngerg, D.V.M.; Arturo Garcia, M.D.Daniel De La Paz M.D.; Cristobal Manalang, M.D.

Earl B. McKinley, M.D.

Clinical MedicineLiborio Gomez M.D., Ph.D.; F. Calderon, L.M.

Jacobo Fajardo, M.D.; Jose Albert, M.D.; H. Lara, M.D.Jose Rodriguez, M.D.

BotanyL.M. Guerrero, Phar D.; A. F. Fischer, C.E., M.F.

J.K. Santos, Ph.D.; P.L. Sherman,Ph.D.; Eduardo Quisumbing, Ph.D.Joaquin Marañon , Ph.D.; Rafael B. Espino, Ph.D.

ZoologyHeraclio R. Montalban, M.A.; Leopoldo B. Uichanco, Sc.D.

Marcos A. Tubangui, D.V.M., Manuel D. Sumulong, M.S., D.V.M

AnthropologyH.O. Beyer, M.A.; Otto Johns Scheerer, M.A.

Vol. 37 September-December 1928

Editorial Board

William H. Brown, Ph.D., EditorR.C. McGregor, A.B., Associate Editor

ChemistryA.P. West, Ph.D.; T. Dar Juan, Phar.D. F. Agcaoili, A.B.

A.S. Argueles, B.S.; F.D. Reyes, B.S.Maria Y. Orosa, Ph.C., M.S.

GeologyVictoriano Elicaño B.S.; Leopoldo A. Faustino, E.M., Ph.D.

Experimental MedicineOtto Schobl, M.D.; H.W. Wade, M.D.;

Stanton Youngerg, D.V.M.; Arturo Garcia, M.D.Daniel De La Paz M.D.; Cristobal Manalang, M.D.

Clinical MedicineLiborio Gomez M.D., Ph.D.; F. Calderon, L.M.

Jacobo Fajardo, M.D.; Jose Albert, M.D.; H. Lara, M.D.Jose Rodriguez, M.D.

BotanyL.M. Guerrero, Phar D.; A. F. Fischer, C.E., M.F.

J.K. Santos, Ph.D.; P.L. Sherman,Ph.D.; Eduardo Quisumbing, Ph.D.Joaquin Marañon , Ph.D.; Rafael B. Espino, Ph.D.

ZoologyHeraclio R. Montalban, M.A.; Leopoldo B. Uichanco, Sc.D.

Marcos A. Tubangui, D.V.M., Manuel D. Sumulong, M.S., D.V.M

AnthropologyH.O. Beyer, M.A.; Otto Johns Scheerer, M.A.

Vol. 39 May-August 1929

Editorial Board

William H. Brown, Ph.D., EditorR.C. McGregor, A.B., Associate Editor

Dorothy B. O’Rourke, B.S., Copy Editor

ChemistryA.P. West, Ph.D.; T. Dar Juan, Phar.D. F. Agcaoili, A.B.

A.S. Argueles, B.S.; F.D. Reyes, B.S.; R.H. Aguilar. Ch.E.J.C. Espinosa, B.S.in Ch.E. ; Manuel Roxas, Ph.D.

Maria Y. Orosa, Ph.C., M.S.

GeologyVictoriano Elicaño BS.; Leopoldo A. Faustino, E.M., Ph.D.

Experimental MedicineOtto Schobl, M.D.; H.W. Wade, M.D.; James S. Simmons, B.S., M.D.

Stanton Youngerg, D.V.M.; Arturo Garcia, M.D.Daniel De La Paz M.D.; R.L. Holt, M.D.; Cristobal Manalang, M.D.

Clinical MedicineLiborio Gomez M.D., Ph.D.; F. Calderon, L.M.

Jacobo Fajardo, M.D.; Jose Albert, M.D.; H. Lara, M.D.Jose Rodriguez, M.D.

BotanyL.M. Guerrero, Phar D.; A. F. Fischer, C.E., M.F.

J.K. Santos, Ph.D.; P.L. Sherman,Ph.D.; Eduardo Quisumbing, Ph.D.Joaquin Marañon , Ph.D.; Rafael B. Espino, Ph.D.

ZoologyHeraclio R. Montalban, M.A.; Leopoldo B. Uichanco, Sc.D.

Marcos A. Tubangui, D.V.M., Manuel D. Sumulong, M.S., D.V.M

AnthropologyH.O. Beyer, M.A.; Otto Johns Scheerer, M.A., E. Schneider, B.L.

Vol. 41 January-April 1930

Editorial Board

William H. Brown, Ph.D., EditorR.C. McGregor, A.B., Associate Editor

Lucile M. Lidstone, Copy Editor

ChemistryA.P. West, Ph.D.; T. Dar Juan, Phar.D.

A.S. Argueles, B.S.; F.D. Reyes, B.S.; R.H. Aguilar. Ch.E.J.C. Espinosa, B.S.in Ch.E. ; Manuel Roxas, Ph.D.

Maria Y. Orosa, Ph.C., M.S.

GeologyVictoriano Elicaño BS.; Leopoldo A. Faustino, E.M., Ph.D.

Experimental MedicineOtto Schobl, M.D.; H.W. Wade, M.D.; James S. Simmons, B.S., M.D.

Stanton Youngerg, D.V.M.; Arturo Garcia, M.D.Daniel De La Paz M.D.; R.L. Holt, M.D.; Cristobal Manalang, M.D.

Clinical MedicineLiborio Gomez M.D., Ph.D.; F. Calderon, L.M.

Jacobo Fajardo, M.D.; Jose Albert, M.D.; H. Lara, M.D.Jose Rodriguez, M.D.

BotanyL.M. Guerrero, Phar D.; A. F. Fischer, C.E., M.F.

J.K. Santos, Ph.D.; P.L. Sherman,Ph.D.; Eduardo Quisumbing, Ph.D.Joaquin Marañon , Ph.D.; Rafael B. Espino, Ph.D.

ZoologyHeraclio R. Montalban, M.A.; Leopoldo B. Uichanco, Sc.D.

Marcos A. Tubangui, D.V.M., Manuel D. Sumulong, M.S., D.V.M

AnthropologyH.O. Beyer, M.A.; Otto Johns Scheerer, M.A., E. Schneider, B.L.

Vol. 43 September-December 1930

Editorial Board

William H. Brown, Ph.D., EditorR.C. McGregor, A.B., Associate Editor

Lucile M. Lidstone, Copy Editor

ChemistryA.P. West, Ph.D.; T. Dar Juan, Phar.D.

A.S. Argueles, B.S.; F.D. Reyes, B.S.; R.H. Aguilar. Ch.E.J.C. Espinosa, B.S.II Ch.E. ; Manuel Roxas, Ph.D.

Maria Y. Orosa, Ph.C., M.S.

GeologyVictoriano Elicaño BS.; Leopoldo A. Faustino, E.M., Ph.D.

Experimental MedicineOtto Schobl, M.D.; H.W. Wade, M.D.

Stanton Youngerg, D.V.M.; Arturo Garcia, M.D.Daniel De La Paz M.D.; R.L. Holt, M.D.; Cristobal Manalang, M.D.

Clinical MedicineLiborio Gomez M.D., Ph.D.; F. Calderon, L.M.

Jacobo Fajardo, M.D.; Jose Albert, M.D.; H. Lara, M.D.Jose Rodriguez, M.D.; Carmelo Reyes, M.D.

BotanyL.M. Guerrero, Phar D.; A. F. Fischer, C.E., M.F.

J.K. Santos, Ph.D.; P.L. Sherman,Ph.D.; Eduardo Quisumbing, Ph.D.Joaquin Marañon , Ph.D.; Rafael B. Espino, Ph.D.

Atherton Lee, M.S.

ZoologyHeraclio R. Montalban, M.A.; Leopoldo B. Uichanco, Sc.D.

Marcos A. Tubangui, D.V.M., Manuel D. Sumulong, M.S., D.V.M

AnthropologyH.O. Beyer, M.A.; Otto Johns Scheerer, M.A., E. Schneider, B.L.

Vol. 44 January - April 1931

Editorial Board

William H. Brown, Ph.D., EditorR.C. McGregor, A.B., Associate Editor

Lucile M. Lidstone, Copy Editor

ChemistryA.P. West, Ph.D.; T. Dar Juan, Phar.D.

A.S. Argueles, B.S.; F.D. Reyes, B.S.; R.H. Aguilar. Ch.E.J.C. Espinosa, B.S.II Ch.E. ; Manuel Roxas, Ph.D.

Maria Y. Orosa, Ph.C., M.S.

GeologyVictoriano Elicaño BS.; Leopoldo A. Faustino, E.M., Ph.D.

Experimental MedicineOtto Schobl, M.D.; H.W. Wade, M.D.

Stanton Youngerg, D.V.M.; Arturo Garcia, M.D.Daniel De La Paz M.D.; R.L. Holt, M.D.; Cristobal Manalang, M.D.

Clinical MedicineLiborio Gomez M.D., Ph.D.; F. Calderon, L.M.

Jacobo Fajardo, M.D.; Jose Albert, M.D.; H. Lara, M.D.Jose Rodriguez, M.D.; Carmelo Reyes, M.D.

BotanyL.M. Guerrero, Phar D.; A. F. Fischer, C.E., M.F.

J.K. Santos, Ph.D.; P.L. Sherman,Ph.D.; Eduardo Quisumbing, Ph.D.Joaquin Marañon , Ph.D.; Rafael B. Espino, Ph.D.

Atherton Lee, M.S.

ZoologyHeraclio R. Montalban, M.A.; Leopoldo B. Uichanco, Sc.D.

Marcos A. Tubangui, D.V.M., Manuel D. Sumulong, M.S., D.V.M

AnthropologyH.O. Beyer, M.A.; Otto Johns Scheerer, M.A., E. Schneider, B.L.

Vol. 48 May-August 1932

Editorial Board

William H. Brown, Ph.D., EditorA.S. Argueles, B.S., Associate Editor

R.C. McGregor, A.B., Associate EditorLucile M. Lidstone, Copy Editor

ChemistryA.P. West, Ph.D.; T. Dar Juan, Phar.D.

F.D. Reyes, B.S.; R. H. Aguilar, Ch.E.; Manuel Roxas, Ph.D.J.C. Espinosa, B.S.II Ch.E.; Maria Y. Orosa, Ph.C., M.S.

GeologyVictoriano Elicaño BS.; Leopoldo A. Faustino, E.M., Ph.D.

Experimental MedicineOtto Schobl, M.D.; H.W. Wade, M.D.

Stanton Youngerg, D.V.M.; Arturo Garcia, M.D.Daniel De La Paz M.D.; R.L. Holt, M.D.; Cristobal Manalang, M.D.

Clinical MedicineLiborio Gomez M.D., Ph.D.; F. Calderon, L.M.

Jacobo Fajardo, M.D.; Jose Albert, M.D.; H. Lara, M.D.Jose Rodriguez, M.D.; Carmelo Reyes, M.D.

BotanyL.M. Guerrero, Phar D.; A. F. Fischer, C.E., M.F.

J.K. Santos, Ph.D.; P.L. Sherman,Ph.D.; Eduardo Quisumbing, Ph.D.Joaquin Marañon , Ph.D.; Rafael B. Espino, Ph.D.

Atherton Lee, M.S.

ZoologyWallace Adams,; Marcos A. Tubangui, D.V.M.

Heraclio R. Montalban, M.A.; Leopoldo B. Uichanco, Sc.D.Manuel D. Sumulong, M.S., D.V.M

AnthropologyH.O. Beyer, M.A.; Otto Johns Scheerer, M.A., E. Schneider, B.L.

Vol. 50 January - April 1933

Editorial Board

William H. Brown, Ph.D., EditorA.S. Argueles, B.S., Associate Editor

R.C. McGregor, A.B., Associate Editor

ChemistryA.P. West, Ph.D.; T. Dar Juan, Phar.D.

F.D. Reyes, B.S.; R. H. Aguilar, Ch.E.; Manuel Roxas, Ph.D.J.C. Espinosa, B.S.II Ch.E.; Maria Y. Orosa, Ph.C., M.S.

GeologyVictoriano Elicaño BS.; Leopoldo A. Faustino, E.M., Ph.D.

Experimental MedicineOnofre Garcia, M.D.; H.W. Wade, M.D.

Stanton Youngerg, D.V.M.; Arturo Garcia, M.D.Daniel De La Paz M.D.; Cristobal Manalang, M.D.

Seymour C. Schwartz, M.D.

Clinical MedicineLiborio Gomez M.D., Ph.D.; F. Calderon, L.M.

Jacobo Fajardo, M.D.; Jose Albert, M.D.; H. Lara, M.D.Jose Rodriguez, M.D.; Carmelo Reyes, M.D.

BotanyL.M. Guerrero, Phar D.; A. F. Fischer, C.E., M.F.

J.K. Santos, Ph.D.; P.L. Sherman,Ph.D.; Eduardo Quisumbing, Ph.D.Joaquin Marañon , Ph.D.; Rafael B. Espino, Ph.D.

Atherton Lee, M.S.

ZoologyWallace Adams,; Marcos A. Tubangui, D.V.M.

Heraclio R. Montalban, M.A.; Leopoldo B. Uichanco, Sc.D.Manuel D. Sumulong, M.S., D.V.M

AnthropologyH.O. Beyer, M.A.; Otto Johns Scheerer, M.A., E. Schneider, B.L.

Vol. 51 May – August 1933

Editorial Board

William H. Brown, Ph.D., EditorA.S. Argueles, B.S., Associate Editor

R.C. McGregor, A.B., Associate Editor

ChemistryA.P. West, Ph.D.; T. Dar Juan, Phar.D.

F.D. Reyes, B.S.; R. H. Aguilar, Ch.E.; Manuel Roxas, Ph.D.J.C. Espinosa, B.S.II Ch.E.; Maria Y. Orosa, Ph.C., M.S.

GeologyVictoriano Elicaño BS.; Leopoldo A. Faustino, E.M., Ph.D.

Experimental MedicineOnofre Garcia, M.D.; H.W. Wade, M.D.

Stanton Youngerg, D.V.M.; Arturo Garcia, M.D.Daniel De La Paz M.D.; Cristobal Manalang, M.D.

Seymour C. Schwartz, M.D.

Clinical MedicineLiborio Gomez M.D., Ph.D.; F. Calderon, L.M.

Jacobo Fajardo, M.D.; Jose Albert, M.D.; H. Lara, M.D.Jose Rodriguez, M.D.; Carmelo Reyes, M.D.

BotanyL.M. Guerrero, Phar D.; A. F. Fischer, C.E., M.F.

J.K. Santos, Ph.D.; P.L. Sherman,Ph.D.; Eduardo Quisumbing, Ph.D.Joaquin Marañon , Ph.D.; Rafael B. Espino, Ph.D.

Atherton Lee, M.S.

ZoologyWallace Adams,; Marcos A. Tubangui, D.V.M.

Heraclio R. Montalban, M.A.; Leopoldo B. Uichanco, Sc.D.Manuel D. Sumulong, M.S., D.V.M

AnthropologyH.O. Beyer, M.A.; Otto Johns Scheerer, M.A., E. Schneider, B.L.

Vol.57 No. 1 May - August 1935

DEPARTMENT OF AGRICULTURE AND COMMERCE

Eulogio Rodriguez, A.B., SecretaryJorge B. Vargas, A.B.,LL.B., Under SecretaryVictor Buencamino, D.V.M., Acting Under Secretary

THE PHILIPPINE JOURNAL OF SCIENCEPublished by the Bureau of Science, Department of Agriculture and Commerce

[Entered at the Post Office at Manila, Philippines, as second-class matter.]

A.S Arguelles, B.S., Ch.E., EditorLeopoldo A. Faustino, E.M., PH.D. , Associate Editor

Richard C. MCgregor, Managing EditorCONTRIBUTING EDITOR

ChemistryManuel L. Roxas, PH.D.; A.P West, PH.D; T. Dar Juan PHAR.D.

F.D. Reyes, B.S.; , F.T Adriano, PH.D.; R.H Aguilar, CH.EA.J. Hermano, D.Sc.; J. C. Espinosa, B.S in CH.E.

Maria Y. Orosa, PH.C., M.S, Marcos M. Alicante, PH.D.Geology

V. Elicaño, B.S.; Q.A Abadilla, E.M.; Jose M. Feliciano, PH.D. Experimental Medicine

Onofre Garcia, M.D.; H. W. Wade, M.D.; Arturo Garcia, M.D.Daniel De La Paz, M.D., Cristobal Manalang, M.D.

Victor Buencamino, D.V.M.; Teodulo Topacio, D.V.M., D.ScClinical Medicine

Liborio Gomez, M.D., ; F. Calderon, L.M.Jacobo Fajardo, M.D.,; Jose Albert, M.D.; H.Lara, M.D.

Jose Rodriguez, M.D.; Carmelo Reyes, M.D.Botany

William H. Brown, PH.D.; J. K. Santos, PH.D., Sherman, PH.D.Leon MA. Guerrerom PHAR D.; A.F. Fischer, C.E,; M.F.;

Eduardo Quisumbing, PH.D. ,;T. G. Fajardo, PH.D. Joaquin Marañon, SC.D. ,Rafael B. Espino, PH.D.

Nicanor G. Teodor, PH.D., Vicente C. Aldaba, PH.D.; Felicano M. Clara, PH.D., Juan P Torres, PH.D., Luis P. Reyes, B.S.F.

ZoologyMarcos A. Tubangui, D.V.M.; Heraclio R. Montalban, M.A

Leopoldo B. Uichanco. D.Sc,; Gonzalo Merino, PH.D.FAUSTINO Q. OTANES, M.S.; HILARIO A. ROXAS, PH.D.

Manuel D. Sumulong, M.S., D.V.M,; Lope M. Yutuc, D.V.M.Deogracias Villadolid, PH.D.; Canuto G. Manuel D.Sc.

AnthropologyH. O. Beyer, M.A.; Otto Johns Scheerer, M.A.; E. E. Schneider, B.L.

Vol.59 January-april 1936

DEPARTMENT OF AGRICULTURE AND COMMERCE

Eulogio Rodriguez, A.B., SecretaryJorge B. Vargas, A.B.,LL.B., Under Secretary

THE PHILIPPINE JOURNAL OF SCIENCEPublished by the Bureau of Science, Department of Agriculture and Commerce

[Entered at the Post Office at Manila, Philippines, as second-class matter.]

A.S Arguelles, B.S., Ch.E., EditorLeopoldo A. Faustino, E.M., PH.D., Associate EditorVicente G. Bunuan, A.B., B.S.E., Managing Editor

CONTRIBUTING EDITORChemistry

Manuel L. Roxas, PH.D.; A.P West, PH.D; T. Dar Juan PHAR.D.F.D. Reyes, B.S.; , F.T Adriano, PH.D.; R.H Aguilar, CH.E

A.J. Hermano, D.Sc.; J. C. Espinosa, B.S in CH.E.Maria Y. Orosa, PH.C., M.S, Marcos M. Alicante, PH.D.

GeologyV. Elicaño, B.S.; Q.A Abadilla, E.M.; Jose M. Feliciano, PH.D.

Experimental MedicineOnofre garcia, M.D.; H. W. Wade, M.D.; Arturo Garcia, M.D.

Daniel De La Paz, M.D., Cristobal Manalang, M.D.Victor Buencamino, D.V.M.; Teodulo Topacio, D.V.M., D.Sc

Clinical MedicineLiborio gomez, M.D., ; F. Calderon, L.M.

Jacobo Fajardo, M.D.,; Jose Albert, M.D.; H.Lara, M.D.Jose Rodriguez, M.D.; Carmelo Reyes, M.D.

BotanyWilliam H. Brown, PH.D.; J. K. Santos, PH.D., Sherman, PH.D.

A.F. Fischer, C.E,; M.F.; Eduardo Quisumbing, PH.D. T. G. Fajardo, PH.D., Jiaquin Marañon, SC.D.

Rafael B. Espino, PH.D., Nicanor G. Teodor, PH.D., Vicente C. Aldaba, PH.D.; Felicano M. Clara, PH.D.,

Juan P Torres, PH.D., Luis P. Reyes, B.S.F.Zoology

Marcos A. Tubangui, D.V.M.; Heraclio R. Montalban, M.ALeopoldo B. Uichanco. D.Sc,; Gonzalo Merino, PH.D.

Faustino Q. Otanes, M.S.; Hilario A. Roxas, PH.D.Manuel D. Sumulong, M.S., D.V.M,; Lope M. Yutuc, D.V.M.

Deogracias Villadolid, PH.D.; Canuto G. Manuel D.Sc.Anthropology

H. O. Beyer, M.A.; Otto Johns Scheerer, M.A.; E. E. Schneider, B.L.

Vol.60 May - August 1936

DEPARTMENT OF AGRICULTURE AND COMMERCE

Eulogio Rodriguez, A.B., Secretary Jose S. Camus, B.A gr., Under Secretary

THE PHILIPPINE JOURNAL OF SCIENCEPublished by the Bureau of Science, Department of Agriculture and Commerce

[Entered at the Post Office at Manila, Philippines, as second-class matter.]

A.S Arguelles, B.S., Ch.E., EditorEduardo Quisimbing, PH.D., Associate Editor

Vicente G. Bunuan, A.B., B.S.E., Managing EditorCONTRIBUTING EDITOR

ChemistryManuel L. Roxas, PH.D.; A.P West, PH.D; T. Dar Juan Phar.D.

F.D. Reyes, B.S.; , F.T Adriano, PH.D.; R.H Aguilar, CH.EA.J. Hermano, D.Sc.; J. C. Espinosa, B.S in CH.E.

Maria Y. Orosa, PH.C., M.S, Marcos M. Alicante, PH.D.Geology

V. Elicaño, B.S.; Q.A Abadilla, E.M.; Jose M. Feliciano, PH.D. Experimental Medicine

Onofre Garcia, M.D.; H. W. Wade, M.D.; Arturo Garcia, M.D.Daniel De La Paz, M.D., Cristobal Manalang, M.D.

Victor Buencamino, D.V.M.; Teodulo Topacio, D.V.M., D.ScClinical Medicine

Liborio Gomez, M.D., ; F. Calderon, L.M.Jacobo Fajardo, M.D.,; JOSE Albert, M.D.; H.Lara, M.D.

Jose Rodriguez, M.D.; Carmelo Reyes, M.D.Botany

William H. Brown, PH.D.; J. K. Santos, PH.D., Sherman, PH.D.A.F. Fischer, C.E,; M.F.; T. G. Fajardo, PH.D.

Jiaquin Marañon, SC.D., Rafael B. Espino, PH.D.; Nicanor G. Teodor, PH.D., Vicente C. Aldaba, PH.D.;

Felicano M. Clara, PH.D.,; Juan P Thorres, PH.D.Luis P. Reyes, B.S.F.

ZoologyMarcos A. Tubangui, D.V.M.; Heraclio R. Montalban, M.A

Leopoldo B. Uichanco. D.Sc,; Gonzalo Merino, PH.D.Faustino Q. Otanes, M.S.; Hilario A. Roxas, PH.D.

Manuel D. Sumulong, M.S., D.V.M,; lope M. Yutuc, D.V.M.Deogracias Villadolid, PH.D.; Canuto G. Manuel D.Sc.

AnthropologyH. O. Beyer, M.A.; Otto Johns Scheerer, M.A.; E. E. Schneider, B.L.

Vol.62 No. 4. April 1937

DEPARTMENT OF AGRICULTURE AND COMMERCE

EULOGIO RODRIGUEZ, A.B., Secretary JOSE S. CAMUS, B.A gr., Under Secretary

THE PHILIPPINE JOURNAL OF SCIENCEPublished by the Bureau of Science, Department of Agriculture and Commerce

[Entered at the Post Office at Manila, Philippines, as second-class matter.]

A.S ARGUELLES, B.S., Ch.E., EditorEDUARDO QUISIMBING, PH.D., Associate Editor

VICENTE G. BUNUAN, A.B., B.S.E., Managing EditorSOPHIE RODOLFO, M.A., Copy Editor

ChemistryMANUEL L. ROXAS, PH.D.; A.P WEST, PH.D; T. DAR JUAN PHAR.D.

F.D. REYES, B.S.; , F.T ADRIANO, PH.D.; R.H AGUILAR, CH.EA.J HERMANO, D.Sc.; J. C. ESPINOSA, B.S in CH.E.

MARIA Y. OROSA, PH.C., M.S, MARCOS M. ALICANTE, PH.D.Geology

V. ELICANO, B.S.; Q.A ABADILLA, E.M.; JOSE M. FELICIANO, PH.D. Experimental Medicine

ONOFRE GARCIA, M.D.; H. W. WADE, M.D.; ARTURO GARCIA, M.D.DANIEL DE LA PAZ, M.D., CRISTOBAL MANALANG, M.D.

VICTOR BUENCAMINO, D.V.M.; TEODULO TOPACIO, D.V.M., D.ScClinical Medicine

ANTONIO SISON M.D.,: LIBORIO GOMEZ, M.D.,JOSE ALBERT, M.D,; H. LARA, M.D.

JOSE RODRIGUEZ, M.D.; CARMELO REYES, M.D.Botany

ELMER D. MERILL, D.Sc,; WILLIAM H. BROWN, PH.D.; J. K. SANTOS, PH.D.A.F. FISCHER, C.E,; M.F.; T. G. FAJARDO, PH.D.

JIAQUIN MARAÑON, SC.D., RAFAEL B. ESPINO, PH.D.; NICANOR G. TEODOR, PH.D., VICENTE C. ALDABA, PH.D.;

FELICANO M. CLARA, PH.D.Zoology

MARCOS A. TUBANGUI, D.V.M.; HERACLIO R. MONTALBAN, M.ALEOPOLDO B. UICHANCO. D.Sc,; GONZALO MERINO, PH.D.

FAUSTINO Q. OTANES, M.S.; HILARIO A. ROXAS, PH.D.MANUEL D. SUMULONG, M.S., D.V.M,; LOPE M. YUTUC, D.V.M.

DEOGRACIAS VILLADOLID, PH.D.; CANUTO G. MANUEL D.Sc.Anthropology

H. O. BEYER, M.A.; OTTO JOHNS SCHEERER, M.A.; E. E. SCHNEIDER, B.L.

Vol.62 No. 3. March 1937

DEPARTMENT OF AGRICULTURE AND COMMERCE

EULOGIO RODRIGUEZ, A.B., Secretary JOSE S. CAMUS, B.A gr., Under Secretary

THE PHILIPPINE JOURNAL OF SCIENCEPublished by the Bureau of Science, Department of Agriculture and Commerce

[Entered at the Post Office at Manila, Philippines, as second-class matter.]

A.S ARGUELLES, B.S., Ch.E., EditorEDUARDO QUISIMBING, PH.D., Associate Editor

VICENTE G. BUNUAN, A.B., B.S.E., Managing EditorSOPHIE RODOLFO, M.A., Copy Editor

ChemistryMANUEL L. ROXAS, PH.D.; A.P WEST, PH.D; T. DAR JUAN PHAR.D.

F.D. REYES, B.S.; , F.T ADRIANO, PH.D.; R.H AGUILAR, CH.EA.J HERMANO, D.Sc.; J. C. ESPINOSA, B.S in CH.E.

MARIA Y. OROSA, PH.C., M.S, MARCOS M. ALICANTE, PH.D.Geology

V. ELICANO, B.S.; Q.A ABADILLA, E.M.; JOSE M. FELICIANO, PH.D. Experimental Medicine

ONOFRE GARCIA, M.D.; H. W. WADE, M.D.; ARTURO GARCIA, M.D.DANIEL DE LA PAZ, M.D., CRISTOBAL MANALANG, M.D.

VICTOR BUENCAMINO, D.V.M.; TEODULO TOPACIO, D.V.M., D.ScClinical Medicine

ANTONIO SISON M.D.,: LIBORIO GOMEZ, M.D.,JOSE ALBERT, M.D,; H. LARA, M.D.

JOSE RODRIGUEZ, M.D.; CARMELO REYES, M.D.Botany

ELMER D. MERILL, D.Sc,; WILLIAM H. BROWN, PH.D.; J. K. SANTOS, PH.D.A.F. FISCHER, C.E,; M.F.; T. G. FAJARDO, PH.D.

JIAQUIN MARAÑON, SC.D., RAFAEL B. ESPINO, PH.D.; NICANOR G. TEODOR, PH.D., VICENTE C. ALDABA, PH.D.;

FELICANO M. CLARA, PH.D.Zoology

MARCOS A. TUBANGUI, D.V.M.; HERACLIO R. MONTALBAN, M.ALEOPOLDO B. UICHANCO. D.Sc,; GONZALO MERINO, PH.D.

FAUSTINO Q. OTANES, M.S.; HILARIO A. ROXAS, PH.D.MANUEL D. SUMULONG, M.S., D.V.M,; LOPE M. YUTUC, D.V.M.

DEOGRACIAS VILLADOLID, PH.D.; CANUTO G. MANUEL D.Sc.Anthropology

H. O. BEYER, M.A.; OTTO JOHNS SCHEERER, M.A.; E. E. SCHNEIDER, B.L.

Vol.62 No. 2. February 1937

DEPARTMENT OF AGRICULTURE AND COMMERCE

EULOGIO RODRIGUEZ, A.B., Secretary JOSE S. CAMUS, B.A gr., Under Secretary

THE PHILIPPINE JOURNAL OF SCIENCEPublished by the Bureau of Science, Department of Agriculture and Commerce

[Entered at the Post Office at Manila, Philippines, as second-class matter.]

A.S ARGUELLES, B.S., Ch.E., EditorEDUARDO QUISIMBING, PH.D., Associate Editor

VICENTE G. BUNUAN, A.B., B.S.E., Managing EditorSOPHIE RODOLFO, M.A., Copy Editor

ChemistryMANUEL L. ROXAS, PH.D.; A.P WEST, PH.D; T. DAR JUAN PHAR.D.

F.D. REYES, B.S.; , F.T ADRIANO, PH.D.; R.H AGUILAR, CH.EA.J HERMANO, D.Sc.; J. C. ESPINOSA, B.S in CH.E.

MARIA Y. OROSA, PH.C., M.S, MARCOS M. ALICANTE, PH.D.Geology

V. ELICANO, B.S.; Q.A ABADILLA, E.M.; JOSE M. FELICIANO, PH.D. Experimental Medicine

ONOFRE GARCIA, M.D.; H. W. WADE, M.D.; ARTURO GARCIA, M.D.DANIEL DE LA PAZ, M.D., CRISTOBAL MANALANG, M.D.

VICTOR BUENCAMINO, D.V.M.; TEODULO TOPACIO, D.V.M., D.ScClinical Medicine

ANTONIO SISON M.D.,: LIBORIO GOMEZ, M.D.,JOSE ALBERT, M.D,; H. LARA, M.D.

JOSE RODRIGUEZ, M.D.; CARMELO REYES, M.D.Botany

ELMER D. MERILL, D.Sc,; WILLIAM H. BROWN, PH.D.; J. K. SANTOS, PH.D.A.F. FISCHER, C.E,; M.F.; T. G. FAJARDO, PH.D.

JIAQUIN MARAÑON, SC.D., RAFAEL B. ESPINO, PH.D.; NICANOR G. TEODOR, PH.D., VICENTE C. ALDABA, PH.D.;

FELICANO M. CLARA, PH.D.Zoology

MARCOS A. TUBANGUI, D.V.M.; HERACLIO R. MONTALBAN, M.ALEOPOLDO B. UICHANCO. D.Sc,; GONZALO MERINO, PH.D.

FAUSTINO Q. OTANES, M.S.; HILARIO A. ROXAS, PH.D.MANUEL D. SUMULONG, M.S., D.V.M,; LOPE M. YUTUC, D.V.M.

DEOGRACIAS VILLADOLID, PH.D.; CANUTO G. MANUEL D.Sc.Anthropology

H. O. BEYER, M.A.; OTTO JOHNS SCHEERER, M.A.; E. E. SCHNEIDER, B.L.

Vol.62 No. 1. January 1937

DEPARTMENT OF AGRICULTURE AND COMMERCE

Eulogio Rodriguez, A.B., Secretary Jose S. Camus, B.Agr., Under Secretary

THE PHILIPPINE JOURNAL OF SCIENCEPublished by the Bureau of Science, Department of Agriculture and Commerce

[Entered at the Post Office at Manila, Philippines, as second-class matter.]

A.S Arguelles, D.Sc., EditorEduardo Quisimbing, PH.D., Associate Editor

Vicente G. Bunuan, A.B., B.S.E., Managing EditorSophie Rodolfo, M.A., Copy Editor

ChemistryManuel L. Roxas, PH.D.; A.P West, PH.D; T. DAR Juan Phar.D.

F.D. Reyes, B.S.; , F.T Adriano, PH.D.; R.H Aguilar, CH.EA.J Hermano, D.Sc.; J. C. Espinosa, B.S in CH.E.

Maria Y. Orosa, Ph.D., M.S, Marcos M. Alicante, Ph.D.Geology

V. Elicano, B.S.; Q.Q Abadilla, E.M.; Jose M. Feliciano, Ph.D. Experimental Medicine

Onofre Garcia, M.D.; H. W. Wade, M.D.; Arturo Garcia, M.D.Daniel De La Paz, ,M.D., Cristobal Manalang, M.D.

Victor Buencamino, D.V.M.; Teodulo Topacio, D.V.M., D.ScClinical Medicine

Antonio Sison M.D.,: Liborio Gomez, M.D.,Jose Albert, M.D,; H. Lara, M.D.

Jose Rodriguez, M.D.; Carmelo Reyes, M.D.Botany

Elmer D. Merill, D.Sc,; William H. Brown, Ph.D.; J. K. Santos, Ph.D.A.F. Fischer, C.E,; M.F.; T. G. Fajardo, Ph.D.

Jiaquin Marañon, Sc.D., Rafael B. Espino, Ph.D.; Nicanor G. Teodor, Ph.D., Vicente C. Aldaba, Ph.D.; Felicano M. Clara, PH.D.

ZoologyMarcos A. Tubangui, D.V.M.; Heraclio R. Montalban, M.A

Leopoldo B. Uichanco. D.Sc,; Gonzalo Merino, Ph.D.Faustino Q. Otanes, M.S.; Hilario A. Roxas, Ph.D.

Manuel D. Sumulong, M.S., D.V.M,; Lope M. Yutuc, D.V.M.Deogracias Villadolid, Ph.D.; Canuto G. Manuel D.Sc.

AnthropologyH. O. Beyer, M.A.; Otto Johns Scheerer, M.A.; E. E. Schneider, b.l.