78 Proceedings of Scientific Institutions. 
Mr. Flourens made a verbal report on a work of Mr. Vatel, entitled, “ Ele- 
ments of Veterinary Pathology,” &c. 
Mr. Milne Edwards communicated to the Academy several new observations 
upon the generation of Crustacee. 
The author has demonstrated that, on issuing from the egg, the young Cy- 
mathe differ very much from their mother, and from what they will themselves 
become. Instead of their thorax being composed of seven rings and fourteen 
ambulatory feet, they only present six thoracic rings and twelve feet. The impor- 
tant difference which the structure of the Cymathee presents at the different 
periods of their life-time, coincides with remarkable modifications in form, and 
constitutes a species of metamorphosis analogous to that which the Onisci and 
certain Entomostraca undergo. 
Mr. Moreau de Jonnés read a memoir, entitled, °° Statistical Researches on 
the Extent and Nature of the Pastures in different parts of Europe.” 
Dr. Rigail presented to the Academy a sound destined to facilitate the intro-~ 
duction of lithontriptic instruments. 
Meeting of the 3d August 1829.__Mr. Daniel addressed to the Academy a 
letter on the hiccough. In the memoir, the author mentioned the following expe- 
riment :—“ Let a dog fast eight or ten hours, place the animal on its back, and 
pour cold water on its stomach, and hiccough will be immediately produced ; out 
of twenty-three dogs, the hiccough was excited in twenty-two; the same effects 
were produced in calves and in bulls.” 
Dr. Desportes sent to the Academy an observation he had made of a young 
pigeon living during two days in its shell, from which it could not extricate itself; 
and existing even some time afterwards, though deprived of encephalon and the 
upper part of the spinal marrow. 
Mr. Dumeril made two reports on the memoirs of Mr. Benoiston de Chateau- 
neuf, relative to the influence of poverty on the mortality of men in the different 
countries of EKurepe, since the beginning of the nineteenth century. 
Mr. Cordier communicated a new fact in the theory of the formations of the 
basin of Paris, by the discovery of the bones of the Paleotherium in a bed of Cal- 
care grossier. 
Mr. Becquerel read a memoir, entitled, ** On the Thermo-Electric Properties 
of Metals.” i 
Meeting of the \Jth of August 1829.—My. Chevreul read a memoir relative 
to the experiments performed by Mr. Donné on the means of neutralizing the 
action of vegetable alkalies on the animal economy. 
Mr. De Blainville, read a letter from Mr. Dubled, associated professor to the 
Faculty of Medicine, relative to the communication of the lymphatic vessels with 
_ the veins. 
Mr. Gay Lussac read a memoir on phosphoric acid, in which he stated, that 
the observations of Messrs Clark and Engelhardt appear to him to have some 
analogy, and that the opinions of the former, relative to the cause of the new 
properties acquired by phosphate of soda after calcination require to be modified. 
Mr. De Rossel, in the name of the commission composed of himself, MM. 
De Beaupré, and Freycinet, delivered a very favourable report on the voyage of 
the Astrolabe, commanded by Captain Dumont d’Urville. 
Mr. Dumeril made a highly adv antageous report on the memoir of Mr. Lugol 
relative to the use of icdine against scrofulous disease. 
Meeting of ite the 24th._.Messrs Caventou and Francois announced to 
the Academy that they had discovered a particular chemical principle in the 
root of a shrub from Brazil, of the family of the Rubiacee, the Kaiauca Chiocoe- 
ca, known in the province of Bahia under the name of vair-prela, (black root. ) 
The principle extracted from this root is a tonic without being an excitant. It is 
a mild purgative but a very strong diuretic. 
