^66 Galvanifm. 



nication was made into the ear by a wetted wire, or flexIbTe 

 conduftor, joining the oppofite end of the troughs. The con- 

 traftions were fo violent as to throw the animal forward on 

 the table. 



Exp, VIII. The communications were exaftly as in the 

 laft experiment, but the head was feparated about fix inches 

 from the trunk, and only communicated by the moifture on 

 the table. On forming the circle, the contradlions were 

 nearly as before. 



Exp. IX. The head being removed, the communication 

 was made with thefpinal marrow; upon which the inttrcotlal 

 mufcles were excited fufficiently toexfpire and infpire the at- 

 inofphcric air with fuch force, as to blow out a lighicd taper. 



Exp. X. Rabbits which had been decapitated exhibited 

 feveral of the before-mentioned phae.nomena. Two trunks or 

 two heads placed together experienced contraftions on the 

 communication being made. 



Exp. XI. A portion of the diaphragin being laid on an 

 earthen plate, was fubjeft to contraftion on the comnuioi- 

 cation being made. 



Exp. XII. The heart was not fubjecSl to contraftion by the 

 Galvanic fhock; but was afJefted mechanically, as it ulually 

 is by glafs, refin, or any infulatiug pointed body. 

 - Exp. XIII. Galvanic attradlion was made fenfible by the 

 operator holding a prepared frog by its feet, placing the other 

 hand on the fpinal marrow of the dog, and bringing the 

 fciatic nerves of the frog nearly in contaft with the expofed 

 ribs of the dog : the nerves were inftantly attrailed, and 

 contraftion took place. 



Exp. XIV. The contraftion of the pupil of the eye, by 

 connet^ing the optic nerve with one end of the pile and 

 touching the iris with the other condu6lor, was fliown. This 

 experiment was propofed by Mr. Babington. 



The furgeons and pupils of Guy's and St. Thomas's Hof- 

 pital very handfomely prefcnled the profeflbr with a gold 

 medal*, as an acknowledgement of his attention and appli- 

 cation in elucidating feveral of thefe compound experiments 

 to their complete fatisfadtion. 



* On one fid-. ?.re the arms of Guy's and St. Thomas's Hofpiral j on 

 tlie other is the follows ing infcription, (urrounded with raifed o;ik leaves: 

 Johanni Aldino, 

 Pra.'chro Phyfico, 

 Digno Galviini Ncpoti, 

 Rcccns Expciimtntis co.T:monfiratis, 

 Proftiriires it Scholarcs 

 Nofocom. St. ThomsE et Guy. 

 Libcntcr perfolvunt. 

 wuccciJi. Londini. 



The 



