44 CUEKENT FORCE CHAP. IV. §. IV. 



Vassali Eandi brings forward in favour of the 

 existence of Animal Electricity is the following : 

 " J'ai prouve ailleurs," says Vassali Eandi, " que les 

 urines donnent une electricite negative, et j'ai fait 

 voir plusieurs fois aux D. Gerki, Gaeotti et aux 

 eleves de medecine et de chirurgie, que le sang tire 

 des veines donne dans mon appareil electrometrique 

 (decrit dans le Vol. V« de I'Academie des Sciences de 

 Turin, Dec. 19, 1790) une electricite positive." 



It need scarcely be stated, that the galvanometer 

 was not then known, and that the effects observed 

 by Vassali Eandi were those of attraction and 

 repidsion. Although the results obtained by Vassali 

 Eandi may be supposed to be due to other circum- 

 stances than those arising from Animal Electricity, 

 such as evaporation or chemical action, nevertheless, 

 as recorded facts, they are of some value, inasmuch 

 as they tend to establish similar conclusions which 

 have been arrived at by different modes of investi- 

 gation, and entirely independent of each other. 



Sect. IV. On the Manifestation of Current Force 



during Mammary Secretion. 

 In my original paper only one experiment was 

 recorded, as shewing the results that were obtained 

 in the Mammary gland; since then, several other 

 opportunities have occurred in which similar results 

 were observed. 



If we insert the electrodes, one into a lactiferous 

 vessel and the other into a vein from the same part. 



