314 



SCIENTIFIC NE\rd. 



ippcar injunous to Respiration, though it do€s to the ppo» 

 duction of carbonjc a<?id. Tenches tVom which it has been 

 removed swim, dive, and rise to the sr.rfuoe, with as much 

 ease as otfeiers. Such are the principal resuUs of the differ- 

 ent inquiries of Messrs. Duvenoy, Delaroche, von Hum- 

 boldt, Provencal, and Cuvier, 

 Foisonof the Drs. Magendie and Delisle have made many experiments 

 '^^ on animals, chiefly do^s, with the poison* of the upas. 



Whether introduced into the system V)y the bloov»vPssels or 

 lymphatics, by the way of the intestines, or by a wound, the 

 animals died universally convulsed. It appear:* particularly 

 to affect the spinal marrow, and to enter the system only by 

 means of the circulation. It seems to act but very nJi- 

 rectly on the brain, thus sh'-win^ an independence be- 

 tween it and the spinal marrow, that is not indicated by 

 anatomy. 

 Juic«ofdead- Mr. Vauquelin has found, that the juice of belladonna. 

 If nighidiade. when swallowed by dnimals, produced in tuem a deliriurai 

 exactly similar to that of opium. Some ex'j.erimer.t8 of 

 Mr. Sage confirm the action of this juice on the nervous 

 system. 

 CUisses inject- Dr^ Nysten has examined the effect of different gassca 

 •d into rtie iniected into the bloodvessels. Atmosphei'ic air, oxigen, ui-^ 

 trcjij oxide, carbonic acid* carbonic oxidCj sulphuretted 

 hidj'ogen, &e., v^ere uot deleterious. Oximuviatic, ammo- 

 niical and nitrous acid passes appeared to act by irritating 

 very violently the right auricle and pulmonary ventricle. 

 Sulphuretted hidrogen, nitric oxide, and niVio^^en were in- 

 jurious to the contractibility of these parts. Some others 

 so changed the nature of the blood, that respiration vas 

 unable to convert itfrora venous to arterial. 

 Stingtof ijv In a paper on the means of remed iuij the sting of the 



sects and weever, trachinus dtaco L. ; and on the effects of the poison 



©f the tarantula, with the mode of cure used in Spain ; 

 Mr. Sage recommends the internal and external use of the 

 volatile alkali. 

 Rotations of lo a report onthe Means of improving: Agriculture by 

 c»*:»P». , Rotations of green crops by Mr. Yvart, the committee re- 

 commends it as answering the important purpose of showing 

 how land may be rendered constantly productive without 

 exhausting it. Mr, 



I 



