316 F, D. Adams—Chlorine in Scapolites. 
‘This winter a duplicate analysis of a scapolite from lot 13 of 
the 8th concession of the township of Ripon, Quebec, was made 
by the writer, but it fell short of 100 by several per cent. Think- 
ing that a loss must have been incurred at some step in the pro- 
cess, the analysis was repeated, but the results were much the 
same. The mineral was then tested for fluorine by the method 
described in Fresenius’ Qual. Anal., p. 218, ut none was 
foun 
; als, the exterior por- 
tions of which are evidently somewhat decomposed, while the 
little lustre. The only cleavage observed was paralled to the 
lateral faces, which are deeply striated. Specific gravity © 
three specimens was as follows: —2-605, 2°654, 2°626. A 
fusing with sodium carbonate, an a Ae 
mass with water, acidifying with nitric acid and precipitating 
the chlorine by silver nitrate. The ex 4 
filtrate was then separated by hydrochloric acid, filtered off, 
* Minute quantities of orthoclase and calcite were observed. No disengage- 
ment of carbon dioxide could be perceived when the powdered mineral was 
treated with hydrochloric acid. 
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