308 Royal Academy of Sciences of Paris. 



a second memoir on the explosion of steam-boilers ; M. Van-IIoorick 

 announced that he had discovered a new construction of the under 

 carriage applicable to all sorts of carriages. — M. Marcel de Serres 

 sent a memoir on Geology.— M. Arago read a letter from M. Des- 

 pretz, in which he gave an account of some experiments intended 

 to render the heat sensible which is disengaged during the com- 

 pression of liquids. — M. Clever of Maldigny (army surgeon) read a 

 Memoir, — after having been seven times cut for the stone, it was re- 

 produced an eighth time, M. Clever determined to submit to the 

 operation of lithotritie ; M. Civiale succeeded perfectly ; the pain 

 occasioned by liihotritie is nothing, when compared with that of 

 lithotomy. — MM. Dumeril and Fred. Cuvier presented the report 

 required by the Minister on the death of Mr. Drake. The conclu- 

 sions are, that the only measure of the Police which could be 

 efficacious, would be that of interdicting the introduction of living 

 venemous serpents into France, always excepting those which are 

 connected with the interests of commerce, or for the advantages 

 of science by persons of reputation. — A Commission consisting of 

 MM. Le Gendre, Poisson, Lacroix, Fourier and Poinsot, will pro- 

 pose a mathematical prize question to be adjudged in 18'i9. 



May 21. — The Keeper of the Seals forwarded a sample of M. 

 Delattre's indelible ink.— M. Mangin presented a memoir, entitled 

 Moyen unique d'obtenir de grands Avantages de l' Emploi dcs Paraton- 



nerres M. Merieu proposed that comparative experiments should 



be made upon the efficacy of all instruments used in lithotomy 

 hitherto invented. — M. Tabareau sent a third memoir On the burst- 

 ing of steam-engine boilers. — M. Arago presented a detailed ana- 

 lysis of a memoir, which M. Kupffijr had sent him from Kasan, On 

 the diurnal variations of direction and intensity in terrestrial mag- 

 netism. — M. Girard, in the name of the Commission, gave a favour- 

 able account of the model of a carriage with four wheels, which M. 

 Van-Hoorick had presented.— MM. Arago, Bouvard, Mathieu, Da- 

 nioiseau and Le Gendre were appointed by ballot as a Commissioa 

 to examine for the present year such pieces as were likely to obtain 

 the medal instituted by Lalande. — M. Arago presented from the 

 author M. Leopold Nobili de Reggio, a memoir, entitled Projet d'un 

 Instrument comparable propre a mesurer les Courans electriques. — M. 

 Faure read a memoir on the iris and on artificial pupils. — M. Gi- 

 roux of Buzareingues communicated some observations and experi- 

 ments which he had made on the reproduction of domestic animals. 

 — M. Benjamin Delessert read for M. Delelle, professor at Mont- 

 pellier, a description of a new genus of the family of the Cucurbi- 

 taceae. 



June 4<. — The election of M. Cassini, jun. was confirmed by the 

 King. — A notice was received from M. Girard On hydraulic ce- 

 ments. — M. Cordier read a paper On the temperature of the interior 

 of the globe; and M. Bormond a memoir On the regularity of the 

 geognostic phaenomena of Arkose, in the east of France. 



June 11. — At this sitting were read, eloges by M. Cuvier on M. 

 Halle and M. Corvisart; and M. Dupin's researches on the canals 

 of France. 



LH. In- 



