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knuckle of small intestine slightly inflamed behind it. Hevery cautiously divided Gimbernat’s ligament, and returnedthe intestine, leaving, however, the omentum in the wound.A pad and bandage were applied, and she was put to bed. Inhalf an hour from the operation, she had the use of her bowelsfreely.23rd.-She has been in no pain, and has done well up to this

time

New InventionsIN AID OF THE

PRACTICE OF MEDICINE AND SURGERY.

Noirsain’s Stove.THE object of this invention will be best understood by a

reference to the engravings, and the following description ofthem -

The soot and smoke which pervade the atmosphere ofLondon are the natural consequences of the condensation ofsmoke, which occurs in the chimneys of the greatest partof the grates and stoves in ordinary use.By regulating the proportion of the opening or section, G,

of the fireplace to that of the passage, I, of the chimney,Mr. Noirsain is able, by means of his apparatus, to raise thetemperature of the flue to a sufficient degree to entirelyprevent the condensation of the smoke passing through it.When combustion is produced in an iron chamber, F, having

an opening, G, for the emission of the heat, and another, H,for the escape of the smoke, surrounding at the same timethis chamber with a second, also of iron, a receptacle, A, isformed, in which the air may be rarefied, and conducted by apassage, BI, into a canal or flue, B, which has its orifice atthe superior part of the chimney, and by a circular passage,0B, into a second flue, C, which has its orifices at the lowerpart of the chimney.

It is by means of the openings at the two extremities of thechimney that it is possible either to use the apparatus for thepurpose of heating or for that of ventilation.The two orifices of the tube, C, are furnished each with a

valve, D and F, which are so managed and connected, thatwhen one is opened, the other is closed, and vice versd. If thevalve, D, which communicates with the chamber, be closed,and the valve, F, which communicates with the flue, be open,the atmospheric air will enter the orifice, B, and becomingrarefied, will pass at once into the chimney. If, on the con-trary, the valve, D, be open, and E closed, the atmosphericair will enter by the orifice, C, and becoming rarefied in theiron chamber, will pass off by the superior part of the

chimney. Thus, by means of the two valves, D and E, eitheran ascending current of hot air, or a descending one of coldair, can be obtained at pleasure in the same tube, B.A careful examination of these stoves leads us to the opinion

that they will effect the object contemplated by their inventor.Already, we are informed, have orders been received for theirerection in various large rooms, and, amongst others, in thecouncil-room of the College of Surgeons, in which the stovewas tested some time since, at one of the College some.

ST. LAWRENCE SCHOOL OF MEDICINE OFMONTREAL.

THE winter course of lectures will commence on Monday,the 3rd of November, 1851.Midwifery and Diseases of Women and Children: Dr. F. C. T.

Arnoldi, surgeon to Montreal General Hospital. Atnine A.M.

Institutes of Medicine (Physiology, Pathology, and Thera-peutics) : Dr. George D. Gibb, physician to the MontrealDispensary. At ten.

Theory and Practice of Surgery: Dr. R. L. Macdonnell.At eleven.

Anatomy, Descriptive and Surgical: Dr. Thomas WalterJones. At two.

Theory and Practice of Medicine: Dr. A. H. David, physician, to the Montreal General Hospital. At three.Materia Medica and Pharmacy: Dr. George E. Fenwick, M.D.,

physician to the Montreal Dispensary. At four.Ophthalmic and Aural Surgery: Mr. Henry Howard, surgeon

to the Montreal Eye and Ear Institution. At five.Chemistry: Dr. Robert Palmer Howard, physician to theMontreal Dispensary. At seven.

Forensic Medicine:Botany:Clinical Medicine: at the Montreal General Hospital, by

,

Dr. David; andClinical surgery, at the same, by Dr. Arnoldi. At noon.Comparative Anatomy and Zoology: by Dr. Gibb.The dissecting rooms lighted with gas, and kept open from

6 A.M., till 11 P.M., daily, during which time competentdemonstrators will attend.Five lectures will be delivered weekly throughout the

session, on each branch, (excepting forensic medicine, clinicalmedicine, clinical surgery, ophthalmic and aural surgery,botany, and comparative anatomy and zooloty, each of whichwill be a three months’ course,) from 1st November to end ofApril, in conformity with the rules of the College of Physiciansand Surgeons of Lower Canada. The recent discoveries inphysiology and pathology will be practically taught by meansof achromatic microscopes.Ample opportunities for midwifery practice will be afforded

to the senior students.Students attending the lectures on ophthalmic and aural

surgery have the privilege of witnessing the practice at theMontreal Eye and Ear Institution.The fees for the lectures will be the same as at the

University of McGill College.N.B.-" The certificates of this school are recognised by all

the principal colleges in Great Britain and the UnitedStates."