62 
Dr. de Crell on the Decomposition 
yellow spots began to appear upon the white flowers; and, 
after the salt at the bottom had become dry, similar spots ap- 
peared upon it, particularly upon the lower surface. The fluid 
was again, for the fourth time, poured upon the salt, and dis- 
tilled ; when the yellow spots and flowers increased in number. 
This was also the case in the fifth distillation. 
Exp. x. The fluid obtained by the last experiment, which 
had changed a little in smell, and had acquired a particular 
scent, almost as if some sebacic acid had combined with the 
muriatic, was poured upon the salt, as before. The number of 
yellow spots, which had also become of a darker hue, was 
considerably increased. The salt had now been exposed, ever 
since the vth. Exp. for thirty-two days, to the digestive distil- 
lation ; and the intermediate time between erch distillation, 
had been longer or shorter, in proportion to the degree of heat, 
and to the time of kindling and extinguishing the fire. As 
I now found, that business of importance would prevent me 
from continuing my labours for some months, I poured two 
other ounces of the muriatic acid upon the salt, besides the 
fluid so often drawn off by distillation, and left the mixture at 
rest. 
Exp. xi. xn. xiii, xiv. When my business was finished, I 
again undertook the distilling of the mixture, which had been 
so long digesting in the cold, for the seventh time, and obtained 
the same results as in Exp. x. Nor was there much difference 
observed in the xnth. xmth. and xivth. Experiments. 
Exp. xv. I now poured the fluid obtained by the xivth. Exp. 
upon the salt, (which had acquired more and more yellow spots, 
brighter in hue,) and then proceeded as before, till the salt be- 
came dry ; upon which, when the retort was cool, I poured one 
