[ 4 8S ] 
As both the juice of the orange, and of the 
peadhes, was in fmall quantity, and not in the moft 
proper hate for yielding a neutral fait, thefe expe- 
riments ought to be repeated, before we can fay what 
is the natural figure and appearance of the falts, that 
may be got by laturating the juices of thefe fruits 
with an alkali. 
Experiment V. 
With the acid of currants. 
A quart of the juice of white currants, after be- 
ing faturated with about nine drams of the fofiil al- 
kali, and purified by repeated filtrations, was evapo- 
rated till a peilicle appeared ; being put into a cool 
place, and allowed to fland for two or three days, 
it yielded a number of fmall fquare flattifh cryftals, 
fuch as are reprefented by fig. 5. Many of them 
feemed to be exadt fquares, and in general they ap- 
proached nearer to this figure, than the cryftals of 
any of the other neutral falts I have hitherto met 
with. 
This fait approached in its tafte to that of the 
limes ; its cryftals were hard and firm, and did not 
run per deliquium. 
Experiment VI. 
With the add of goofeberries. 
« 
A quart of the juice of goofeberries, being treated 
in the fame way, as that of the currants, yielded a 
neutral 
7 
