Experiments in Galvanic EleBricity. 347 



The nitrous acid feemed to be little or not at all afted upon, 

 by the Galvanic influence, from which Mr. Cruickfhanlc in- 

 fers that it is fo perfeA a conduftor of the fluid as to tranfmi^ 

 it like metals, without experiencing any change ; and thi9( 

 he thinks may poflTibly be owing to the great proportion of 

 oxvgen, which enters in?o its compofition, having before re^ 

 marked that all fluids, containing lilile or no oxygen, ar^ 

 non-condu6lors, or nearly fo. 



The corroded matter generated at the wire connefted with 

 the zinc are not, Mr. Cruickfhank obferves, pureoxydesj^ 

 and it follows that an acid, as before mentioned, and probably 

 the nitrous, is produced; for all the green oxyds of copper 

 contain an acid of fome kind or other, the pure oxyds of 

 that metal being either dark red or deep brown. 



Mr. Nicholfon's Journal alfo contains fome interefting ex- 

 periments on this fubjed made by Mr. Davy, of Briftol, which 

 gave refults that almoll all admit of the fame inferences that 

 have been made by Mefl'rs. Nicholfon, Carlifle, and Cruick, 

 flunk. He made an ingenious diverfity in the circuit. 

 Tubes filled with diflilled water, and furnilhed with gold 

 wires connefted with the pile, were inverted in different 

 glafles, and the communication between them formed by 

 nufcular fibre ; the gafes were given oft' in great quantity, 

 and from feveral experiments pure oxygen and pure hydro- 

 gen were feparateiy obtained, nearly in the proportions re- 

 quired to form water. 



Some ingenious experiments have alfo been made by Mr, 

 Henry, of Manchefter, and by Lieut. Col. Henry Haldanej 

 for an account of which we muft refer our readers to th« 

 Philofophical Journal. 



V. Letter from Henry Moves, M.D. to Maxwell 

 Garthshore, M.D. containing an Account of fome 

 iTiterefing Experiments in Galvanic Eledrictty. Commu- 

 nicated by Dr. Garthshore. 



DEAR SIR, Pittenweem, Fifeftiire, Aug. 15, 1800. 



JTXAVING once more relumed to my fummer refidence, 

 where folitude increafes the attra^lions of fcience, I fhall 



Y y a now 



