French National Institute. 313 



M. Pelletan has presented a work on internal aneiirisins. 

 These diseases, allliough almost always mortal, may be 

 checked in their progress when care is taken to debilitate 

 the patient by i'rcquent phlebotomy and other means. This 

 treatment, suggested by Valsalva from an idea of Hippo- 

 crates, has been successlully resorted to by M. Pelletan ; 

 and with three patients he succeeded in perlorminc a radical 

 and unequivocal cure. 



Some polemical writings on the Plica polonica, exchanged 

 between M. Chamseru and the adversaries of his opinions 

 on the subject, having led to nothing further than what we 

 last year communicated, we wait for more conclusive ob- 

 servations before we resume the subject. 



We now proceed to the agricultural department, with 

 which we shall close our report. 



The Prcjetdu Code Rural, drawn np by order of his ma- 

 jesty, has been submitted to the examination of commis- 

 sioners chosen from every department of the empire. This 

 work is intended to guard the farming interest of France 

 against every kind of depredation or deterioration. 



M. Tessier has also by order of the government edited a 

 popular course of instructions relative to the culture of cot- 

 ton in France, and which has already been attended with 

 success in the southern provinces. 



iNI. Bosc has read a memoir, at once botanical and agri- 

 cultural, in which he describes 28 species of ash trees 

 long' cultivated in the neighboured of Paris, which were 

 either not known to naturalists or confounded with each 

 other. Several of these species, indigenous of North Ame- 

 rica, arc large trees, which may become very useful to the 

 arts by the pliability and elasticity of their wood, qualities 

 in which they are superior to the common ash-trce. 



If we refer to the memoirs on establishing the sugar-cane 

 in France, by M. Cossigny, — to the paper by M. Morel de 

 Vincle, on I he method of increasing Merino sheep, — to the 

 chemical principles of dv-ing, by M. Chaptal, — and to the 

 two volumes of --i/;o/c'5, | u'.)h3hed this year by the jirofessors 

 of the museum of natural history ; it will be evident that 

 the science of agriculture has not been neglected. 



Three new substances added to chemistry, one of which 

 had been in vain sought after for twenty years, the two 

 others scarcely supposed to exist, — more precise ideas on the 

 structure of the most in)portant organ of the animal body, — 

 a more positive knowledge of some parts of the world, — 

 ^ muhitiide of organized beings added to the numerous list 



already 



