3 22 



On Resistance to Electric Current 



Quadrang. nitre 

 4-0 



4-3 

 6-0 

 6-2 



plainly greater, 

 seemed greater, but doubtful, 

 seemed less, rather doubtful, 

 plainly less. 



627] 2-0 of oil of vitriol, 2, 5-10 of spirit of salt 2, and 5-19 of f. alk. D, 

 were diluted with water, the solution being 3 . 10 . 12. Consequently the quantity 

 of acid in 2 first were equivalent to that in salt in 59 of water, and the alk. in 

 last was equivalent to that in salt in 29; compared in the same manner as the 

 former. 



scarce sensib. greater. 



seemed greater, but doubtful. 



plainly greater. 



plainly less. 



seemed less, but doubtful. 



sensib. greater. 

 not sensib. 

 sensib. less. 

 not sensib. 



seemed less, rather doubtful, 

 seemed greater, rather doubtful. 



Diluted spirit of salt. 



n-8 

 8-0 



Another diluted spirit of salt was made of same strength as the former. 

 Being tried with wires at 9-9 inch, distance no sensible difference was per- 

 ceived, which agrees with former. 



Another diluted oil of vitriol was made and tried, Jan. 16. 



5-2 



77 



sensib. greater, 

 sensib. less. 



EXPERIMENTS IN JANUARY, 1781 *. 

 628] Some basket saltf was dried before fire, and a saturated solution made 



with it which contained 



378 



of saltj, and also other solutions of different 



strengths, all being made with distilled water. 



* [The results of these experiments are collected in Art. 695. See Note 33.] 

 f ["Salt made up in form of sugar loaves, in small wicker baskets, which is 

 thence called loaf salt or basket salt." Rees' Cycloptzdia.] 



{ [26-45 per cent. Saturated solution at 18 C. is 26-4 per cent, by Kohlrausch.] 



