Royal Academy of Sciences of Parts. 151 



which they lead, respecting the ancient state of the New World, 

 the communications of its inhabitants with each other, and 

 their original country." 



May 9. — The Minister of the Interior announced the ar- 

 rival of M. Pacho at Derne, on tlie confines of Cyrenaica. 



M. de Humboldt presented some grains consisting of plati- 

 num, osmium, and iridium, found in the auriferous sands of 

 the Ural. He also announced that he had received from 

 MM. Boussingault and Riveiro an entire year of observa- 

 tions on the horary variations of the barometer, at Santa-fe- 

 de-Bogota. They have found that the mean monthly heights 

 form a very regular series, and they have examined the in- 

 fluence of the moon on this barometer under the tropics. 



M. Ch. Gaudichaud's memoir, entitled " Observations on the 

 Cycas cv-cinalis," was referred to MM. de la Billardiere and du 

 Petit Thouars. — M. Geoffroy St. Hilairemade a verbal report 

 on the zoological portion of M. de Freycinet's voyage, drawn 

 up by MM. Quoy and Gaymard.— M. Francoeur read a 

 memoir on the measures adopted in England for establishing 

 uniformity of weights and measures.— M. Gondret read a 

 memoir on cataract. 



INIay 16.— M. Marcel de Serres transmitted a memoir ou 

 some remains of the mastodon a dents etroites, or mastodon 

 of Simorre, recently found in several parts of France, and 

 especially in the neighbourhood of Montpellier.— M. Mirbel, 

 in the name of a committee, made a report on M. Gaudi- 

 chaud's Flora of the Malouines. — M. de Freycinet read a 

 memoir on the observations on the pendulum, made durino* 

 his voyage round the world.— M. Moreau de Jonnes continued 

 the reading of his memoir on the American dog. 



May 23.— M. Jomard presented a map of the fall of the 

 Nile, compared with that of several other rivers. He also 

 communicated a letter from M. de Beaufort, dated from Bas- 

 rel, respecting the route he is pursuing.— A new solar system 

 by M. J. Telard was committed to the examination of MM. 

 Mathieu and Cauchy.— M. Coquebert de Montbret, in the 

 name of a committee of statistics, made a report respect- 

 ing the prize in statistics, and proposed to award to the 

 " Statistics of the department of L'Herault," by M. Hip- 

 polyte de Lessert, son of the prefect.— M. Geoffroy St.Hilaire, 

 on the part of the committee for the prize in medicine, pro- 

 posed the following: "Give the general and comparative history 

 of the circulation of the bloocl, in the four classes of verte- 

 brated animals, before and after birth, and at different ages." 

 — M. Navier, in the name of a committee, announced that 

 M. de Montyon's prize in mechanics had been adjudged to 



M. Pon- 



