at. On a Crystallized Slag from Kulti. 
By Hem Cuanpra Das-Gupta. 
In 1909, with the kind permission of the authorities at 
Kulti (near Barakar), I had an opportunity of revisiting the 
Holland and Dr. Fermor,! I came across a few bits of slag lying 
here and there and these on a subsequent microscopical exami- 
nation, in the College Laboratory, appeared to consist of a few 
crystals in a glassy base. The manager of the iron works was 
in hydrochloric acid. 
Thin slices of these slags, when examined with a petrologi- 
cal microscope, reveal a number of crystals of different sizes 
and shapes embedded in a vitreous groundmass. Many of the 
crystals are rectangular, while there are some whose shape 
ue 
- A number of crystals (e.g. fayalite?, mica *) have already 
been described from crystallized slags obtained at iron-works, 
furnace at Saint Nazaire* which is interesting from our present 
point of view. Besides publishing a chemical analysis of the 
substance, to which attention will be drawn later on. Fouque 
1 Rec. Geol. Surv. Ind., Vol. 39, pp. 101-106. : 
2 Journal Iron and Steel Inst., 1889 (No. Il), p. 412; op. cit. 1895, 
(No. I), p. 436. 
8 Op. cit. 1889 (No. IT), p. 412. 
+ Bull. Soc. Min., t. ix, pp. 287-293. 
