3S2 Mr. Macie’s Account of 
in the platina crucible to a ftrong fire in a forge for zo ' ; but 
did not even concrete together. 
(F) When magtiefia was ufed, no fufion took place at ti.s 
blow-pipe. 
(G) Equal parts of Tabafheer, whiting, and earth of 
alum precipitated by mild volatile alkali, were mixed in a ftate 
of powder, and fubmitted in the platina crucible to a ftrong 
fire for 20', but were afterwards found unmelted. 
Examination of the other fpecimens . 
N° I. 
This parcel contained particles of three kinds; fome white, 
of a fmooth texture, much refembling the foregoing fort ; 
others of the fame appearance, but yellowifh ; and others 
greatly fimilar to bits of dried mould. 
The white and yellowifh pieces were fo foft as to be very eafily 
rubbed to powder between the fingers. They had a difagree- 
ble tafte, fomething like that of rhubarb. Put into water, the 
white bits fcarcely grew at all tranfparent ; but the yellow 
ones became fo to a confiderable degree. 
The brown earth-like pieces were harder than the above, had 
little tafte, floated upon water, and remained opaque. 
Expofed to the blow-pipe, they all charred and grew black ; 
the laft variety even burned w r ith a flame. When the vegetable 
matter was confumed, the pieces remained white, and then had 
exactly the appearance, and pofTefled all the properties, of the 
the foregoing Tabafheer from Hydrabad, and like it melted with 
foda into a tranfparent glafs. 
N° II. 
