feuag J 
Tuovucu thefe experiments were fully fufficient to refolve my 
own doubts, yet to render ftill more fatisfaction to bleachers, I 
repeated them with the falts they generally ufe, and alfo with 
foap. 
I GHeREFoRE diffolved one ounce of fweet barilha, Dantzic 
pearl afh, Cunnamara kelp, caffup and-Ciarxe’s pearl afh, each 
in fix ounces of pure water, and putting in one ounce meafure 
of each folution, 8 grains of the green colouring matter, fet them 
to digeft in a heat of about 180° for 37 hours. At the end’ of 
this time I found that 
The Dantzic diffolved more than the barilha. 
The kelp as much as the Dantzic. 
The cafhup and Cuarke’s diffolved the whole. 
Hence I added half an ounce more of the folutions of Dantzic; 
barilha and kelp; the Dantzic and kelp then diffolved the whole, 
but of the folution of barilha two ounces were requifite to perform 
this effect. , 
I auso diffolved half. an ounce of Windfor foap in eighteen) 
ounces of water ; the folution was turbid, and could not be rendered 
tranfparent but when it was near boiling, and then it was very 
unmanageable, for when boiled it fpouted three feet high out of 
the bottle. Three ounces of this folution were requifite to diffolve: 
8 grains of the colouring matter. 
G2 Now. 
