142 Royal Academy of Sciences of Paris. 



terwards, in alphabetical order, MM. Bessel, of Kcenigsberg ; Blu- 

 menbach, of Gottingen ; Robert Brown, of London ; Leopold de 

 Buch, of Berlin; Dalton, of Manchester; Gibers, of Bremen; 

 GErsted, of Copenhagen ; Plana, of Turin ; and Soemmering, of 

 Frankfort. 



Aug. 6.— The following memoirs were received at this sitting :— 

 On the use of chloride of lime in disinfecting the air in which silk- 

 worms are kept, by M. Bonafous j On the propagation of heat in 

 a triangular prism, by M. Ostrogratzki ; On an artificial nose from 

 the skin of the forehead, by M. Delpech; On the motion of fluids 

 in the atmosphere, by M. Le Chevallier.— Dr. Young was elected 

 Foreign Associate of the Academy. — M. Geoffroy-Saint-Hilaire 

 presented the head of a young giraffe, in which it was seen that 

 the bony nucleus of the horn in the young animal is separated from 

 the forehead by a distinct suture. There were read a memoir On 

 some electrical phenomena produced by the pressure and cleavage 

 of crystals, by M. Becquerel ; On the compression of gases, by 

 M. Despretz; On a new theory of sonorous vibrations, by M. 

 Cagniard-Latour ; On the operation for the artificial pupil, by M. 

 Faure. — M. Molard gave a favourable account of tachygraphy, and 

 of the tachy type, invented by M. Conti. 



Aug. 13. — Titles of memoirs received ; — Memoir in continuation 

 of the history of quina, cinchonia and kinic acid, by M. Henry ; 

 Remarks on the weight and dimensions proper for the sails of ma- 

 chines in order to produce the desired effects, by M. Landormy ; A 

 third notice on the motion of fluids, by M. Le Chevallier ; Memoir 

 on two cases of luxation of the cervical vertebrae with compression of 

 the spinal marrow, by M. Barny. — M. Chevreul read a notice On 

 the discovery of phocenic acid in the alkanet. — M. Lisfranc read 

 a memoir On rhynoplastie, and presented an individual who had 

 successfully undergone the operation. — M. Geoffroy-Saint-Hilaire 

 communicated Some observations on a polydactyl horse, with toes 

 separated by membranes. — M. Savart read a memoir On vibrations. 

 The Academy received at this sitting two verbal reports : one by 

 M. Freycinet, On M. Balbi's ethnographical atlas ; the other by 

 M. Silvestre, on M. Francceur's work On the teaching of linear 

 drawing. 



Aug. 20. — The ordonnance of the King confirming the nomination 

 of M. Berthier was received. — A letter from M. Pons announced 

 the discovery of a new comet. — M. Fossombroni communicated a 

 report respecting the Caesarean operation lately performed in a 

 hospital at Florence. — Titles of memoirs received: Researches and 

 observations upon false consecutive aneurism, by M. Breschet; 

 Discoveries on the treatment of scrofulous affections, and a process 

 for healing fistula in ano (a sealed packet), by M. Deygallieres ; 

 New observations on yellow fever, by M. Leymerie. — M. Cassini, in 

 the name of a Commission, gave a favourable account of M. Turpin's 

 researches on the reproduction of truffles. — M. Pouillet read a 

 memoir On electro-magnetism. — M. Chabrier read An extract of 

 some new observations on the progressive motion of animals. 



Aug. 



