372 L. W. McCay—Massive Safflorite. 
The specific gravity was first taken with a number of pieces 
about the size of peas, no special care, however, being observed 
as to selection. I obtained: 
a. 6°832 
2: 6°839 
3 6°845 
Although too high for smaltine the results were unsatisfac- 
tory. A careful examination, with a hand glass, of a large 
number of pieces, disclosed the presence of numerous tiny 
orifices. I therefore selected with the greatest care a sufficient 
quantity of what appeared to be the most homogeneous chips, 
and again made two determinations. I obtained: 
6°858 
2. 6859 : 
In every case the pieces of mineral were thoroughly boiled in 
water. 
line safflorite which was analyzed by Jaeckel* in Heintz ‘ 
laboratory. The specific weight was taken by Rose, who io 
6840. Rose says the weight is low owing to the presence 0 
schlackenkobalt, brought 52555 grams into a picnometer and, 
having filled the same about half full of water, placed it for 
the boil- 
ing water bath and, finally, heated the water in the bottle 
eral was again taken. In this case the result was most pore 
factory, the figure 7-167 being obtained. Temperature of 
Ke 
ful chemical analysis with the following result: 
Quantity for analysis 0-5 grm. 
ee a ee re 69°52 
Se et ee 0°90 
OR ee ee as 18°36 
Pree St not even a trace! 
Oe) ee aig £2 9°40 
eee es i ets aes 0°62 
Beet ee 8 ke tae LS tr. 
BUOOINUIG 91256 See sere oe ek 1°30 
verre 
100°10 
* Rose’s Krystallo-chemisches System. 
