fim Gdlvdnifrh. 



when difcharged in the dark. This experiment dbes not al- 

 ways fucceed ; and the caufe of the difftrences obfervt?d in 

 <hid refpeft is not yet known. 



Thte fecond faft is the inflammation of anv combuftible 

 natter, fuch as a (mall bit of lineu rolled up, when put mW 

 the narrow canal in which the lower extremity of a pumjT 

 for condenfing the air generally terminates. Two or three 

 ftrokes of the pifton are Tufficient to inflame it, according as 

 flie current of air produced is more or lefs rapid. 



In the fame fitting M. Segnin concluded a memoir, which 

 he had announced in the precedinsf, on the difcover\' he pre- 

 tends to have made of a new febnfuge principle, abfolutely 

 different fram any of thofe before employed with greater or 

 lefs fuccefs. He confiders it as much fupf^rior to cinchona, 

 on account of the certainty of its effetls, and the facility with 

 which it can be procured. This febrifuge is nohing elfe 

 than gelat'me, or common ftrong gli^e. He purifies it, mixes 

 it w th a little fugar and orange flower w>'r, and rolls it out 

 into large cakes, which he cuts into Aiii'' squares of the fize 

 of an inch, weighing about a pros i ue dofe is from two 

 gros to thirty- two, according t liie age and circtunftances 

 of the patient. It is diffoUed in water in fuch a manner 

 that the beverage retains a confideralik- degree of confift- 

 ence ; and it is fwallowcd at once when the fit comes on. The 

 fame thing is repeated at the next fit, and if- i^s felklom rrecefj 

 fary to take a third. 



The author has mentioned a riiimber of perforis to give 

 teftimony of the fuccefs of this remedy, all from the indivi- 

 duals who depend 'on his vaft eftabliflmients of tanning and 

 agriculture. 



The Inftilute has appointed a commill!ion, compofe'd of 

 Berthollet, Fourcroy, Des Effarts, and Portal, to examine 

 the memoir, and give in a report on it after repeating ih& 

 experiments. 



M. Seguin has announced a fcries of memoirs, in which 

 he fays he will develop the whole theory of fever, deter- 

 mine what is the febrile principle properly fo Called^ and 

 wjiat is the mode of a6tion of fcbrifuce iiiedicines. The re- 

 fults arc waited for with a mixture of impatience and doubt. 



GAt-VANISM. 



ProfefTor Aldini repeated his experiments on Galvanifm at 

 the Anatomical Theatre, St. Thomas's; Hofpital, during the 

 lall month. As the profeffor does Hot fpeak the Englifh 

 language, Mr. Aftley Cooper expjlained to the gentlemen 

 prelent. The Galvanic troughs, confiding of 12 j pairs of 



filver 



