I8 MINERALOGICAL 
Stannum ochraceum cornubienfe 
The colour of it is hair-brown, fome- 
times lighter, fometimes darker y when 
lighter it approaches fomewhat a yellow 
grey, and fometimes an Ifabella yellow. 
Not unfrequently there are two or more 
fhades of this colour in one piece in the 
fmall parallel fpherical ftriae, which run 
acrofs it. 
It has never been found but in fmall 
pebble-like pieces, which are partly much 
rounded, and partly ftill retain their for¬ 
mer irregular augular figure, or the fplit- 
tered form of their fragments, with angles 
only a little rounded. There are found, 
though but rarely, pieces which fliew on 
one or more iides their original fmall 
fpherical external protuberances. ' ■ 
The furface of thefe pieces is only a , 
little rough. 
The external furface of this foffil has 
only a fmall degree of luftre, but inter¬ 
nally it is fomewhat brighter, and in 
general of a common luftre. 
It 
