[ 305 ] 

 LI. Proceedings of Learned Societies. 



ROYAL ACADEMY OF SCIENCES OF PARIS. 



March 12. '\/\ LATREILLE made a verbal report upon a work 

 -i-^A* ofM. Payradeau, entitled Catalogue descript if et 

 methodique des Annelides et des Mollusques de l' lie de Corse. — M. 

 Cauchy read a memoir On the pressure or tension oFsolid bodies. 

 — M. de Saint-Fargeau read a notice On hybrid productions of 

 Volucetlce. — M. Navier communicated a memoir On the motion of 

 an elastic fluid which escapes from a gasometer. — M. Meirieu read 

 a manuscript, entitled De la Lithomt/lie, ou Recherches sur la Des- 

 truction de la Pierre dans la Vessic par des Mo?/ens mecaniques. — The 

 Academy appointed two Commissions, one constituted of MM. Gay- 

 Lussac, Dulong, Arago, Fourier and Thenard, to determine the 

 merits of Memoirs communicated on the compression of liquids ; — the 

 second, consisting of MM. Thenard, d'Arcet, Dulong, Gay-Lussac 

 and Chevreul, for the purpose of adjudging the prize founded by 

 M. Monthyon, for rendering an art or trade less unhealthy. 



March 19. — The Minister of the Interior forwarded a memoir of 

 MM. Pihorel and Desmoulins, On the examination of the body of 

 Mr. Drake, who died at Rouen in consequence of the bite of a rattle- 

 snake, — M. Henry wrote to remind the Academy, that it was he 

 who gave the process at present adopted for the preparation of sul- 

 phate of quina, believing himself, on this account, intitled to one 

 of the prizes instituted by Monthyon. — M. Latreille read a report 

 upon a memoir of M. Vallot concerning the Cecidomijes. — M. Val- 

 lot was advised to continue his researches. — MM. Cuvier and Du- 

 meril reported very favourably respecting the anatomical researches 

 which MM. Milne Edwards and Audouin had presented. On the cir- 

 culation in Crustacea. — M. Biot read a memoir On the measurement 

 of azimuths in geodesical operations. — M. Cuvier read a memoir 

 On the genus offish called Pogonias. — M. Geoffroy communicated 

 on this subject some observations which he had made on certain 

 siluri of the Nile : — these fish make a noise under water which is 

 very sensible at the surface ; they appear to employ the spines of their 

 fins for this purpose. — M. Girard gave a verbal account of M. Lamb- 

 lardie's work, intitled Observations sur le Projet de Barrage de la Seine. 



March '26. — Mr. Scoresby, recently named a corespondent, re- 

 turned his thanks to the Academy. — M. Segalas deposited a sealed 

 packet.— M. Felix Haise presented a new valve, which he considered 

 as adapted to prevent the explosion of boilers. — M. Mathieu made 

 a favourable report of a water clock, invented by M. Blanc of CJreno- 

 ble. — M. du Pctit-Thouars read a memoir On the history of coni- 

 ferous trees. — .MM. Raspail and Robineau Desvoidy communicated 

 their researclies into the natural history of the Alcyonella stagnorum. 



April 2. — The Minister of the Interior communicated the re- 

 port of the Prefect of Doubs upon the fossil bones which had 

 been discovered by Dr. Buckland in the grottos of Osselles near 

 Besan^on. — M. Levret sent a notice On atmospheric refractions — 

 M. Latreille gave a favourable account of the work presented by M. 



New Series. Vol. 2. No. 10. Oct. 1827. 2 K Le 



