INDEX. 



paratcis, j— On galvanifm, 70, 172, 

 ao6 



Wind> Its influence on the formation of 

 fnow, 75 



WJ'ikeJmann, 233 



Wiaterboiton, Dr. defcrlption of his ma- 

 chine for clearing roads of mud, 29 



Wire, comparative deflagrationof, by eleo* 

 tricity and galvanifm, 205 

 5W. N. on the arrangement of different 



■ galvanic apparatus., 3 — On an Egyptian 

 lock of very high antiquity, 115 



"Wollafton, Dr. examination of his perif- 

 coplc fpeftacles, 38— On certain che- 

 mical effects of light, 293 



Wood-copper, a fpccies of arfeniated cop- 

 ier, 258 



Wool, confiderations on the cleanfihg and 

 bleaching of, 90 — Lofs of vaeight by 

 fcouring, 96 — Improvement in, 278 



Wopif, Mr. his method of meafuring the 

 contents of a pipe, 64 — Account of his 

 improvement in the conftrudlion of 

 fteam-eiigines, 261 



Y. 



Yellow precipitate obtained from platina, 

 120 



Yolk of wool,, experiments in the, go- 

 Component parts of, 93 — Its principal 

 fource is the humour of the tranfpira- 

 tlon, 94— Its acrimony probably hurtful 

 to the living animal, 96 



'S'HK END Ot THE EIGHTH VOLUME, 



Printed by W. Stratford, Crown Court, Temple-Bar^ 



