254 "Journal of Experiments^ y an. 1773 



521] The quantity of electricity in a Florence flask tried with and without a 

 magazine. 



The quant, el. in a Florence flask was tried by putting it on negative side, 

 and some of the jars &c. on the other, the battery of 6 Florence flasks being 

 used instead of the jars. 



With the i 8 ', 2 nd , 3 rd jar with sliding plate 6 40 sep. neg. rather more 

 than i diam. 



4 jars + white cyl. sep. a little pos. 



i, 2, & 3 jars + 6 48 D neg. 



Sat. Jan. . Th. 56. N. 19. 



The same thing tried again in same manner 

 with the 4 jars and white cyl. sep. about i diam. pos. 

 with i, 2, & 3 jar D neg. 



4 jars + white cyl. D pos. 



Tried without mag. 



With 4 jars and white cyl. sep. at I st about i diam. but soon closed, 

 with i, 2, & 3 jar sep. a good deal neg. 



with i, 2, & 3 jar + wh. cyl. + gr. cyl. 2 after a time sep. near i diam. 

 With 4 jars and the 2 cyl., sep. at I st a good deal, after a time sep. about I diam. 

 Sun. Jan. Th. 56. N. 21. 



A coating of tinfoil to a part of the Florence flask out of water. 



With 4 jars + wh. cyl. + gr. cyl. 2 sep. rather more than i diam. 

 The case was much the same whether wire was suffered to rest at bottom 

 2" or 3", or less than i". 



With 4 jars + wh. cyl. + 6 16 sep. less than i diam. 

 With i, 2, & 3 jars + 6 - 16 D neg. 



Without mag. 



With 4 jars sep. a little neg., increased after a time to full i diam. 

 By the I st night's experiments the flask contains 12126 inc. el. 

 by the 2 nd 11694 



and by the 3 rd "495 



Without magazine by 2 nd night it contained 13205 inc. el. 

 The true quantity is supposed 11700 



522] Computed power of above flask. 



The diameter of the flask at the surface of the water in tin pan on Saturday 

 was 1-7; the height of that part above the bottom 5-1 ; the height of top of tinfoil 

 coating above bottom 6-55; and the diameter of that place, -68; and the cir- 

 cumference at the widest part 13. 



The weight of that part under water was i .. 2 .. 7*, and that of the part 

 between that and the top of coating was 2 .. 4. 



* [Troy weight.] 



