itz Salt of Urine . 
Some of the Parallelograms increafe mubli 
in Size, and fpread themfelves in the Mid¬ 
dle, fo as to change their firft Figure, and be¬ 
come three or four Times bigger than the 
reft; and thefe have a dividing Line that 
runs through their whole Length from End 
to End, whence iffiie other ftiort Lines, at 
fmall Diftances, oppoiite to one another, all 
pointing with the fame Degree of Obliquity 
towards the Bafe, as may be feen at c c. 
Among thefe enlarged Figures fome few 
fhoot ftiil forward and tapering towards a 
Point; but before they form one, fwell again, 
and begin as it were anew : and thus they 
proceed feveral Times before their compleat 
Figure is finifhed, which is at laft a Kind of 
long fharp-pointed Body, compofed of more 
or fewer Joints as at dd. 
After the whole Procefs feems at an End, 
many fmall Branches form themfelves on 
the Surface of the Glafs, as in the preced¬ 
ing Salt (fee the Picture,) though their 
Figure is not juft the fame. — All the 
above defcribed appear when a very mode¬ 
rate Degree of Heat is given, and the Drop 
is applied to the Microfcope as foon as any 
of the Salts cryftalized are feen white about 
the Rim. But the Figures i, 2, 3, 4, 5, 6, 
are the regular folid Cryftals of this Salt, 
when it is let diffolve in the Air, and no 
Heat at all is given. 
CHAP* 
