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had found this mode of procedure to be troublesome to 
work, and had therefore tried the following, which was found 
to act in a perfectly satisfactory manner, at least with the 
particular ore upon the analysis of which he was engaged at 
the time. It was his intention to test its applicability to 
other ores, and report the results at some future time. 
The Titaniferous ore is very finely pulverized, and then 
thoroughly ignited in a Platinum crucible over a Bunsen 
burner, until it is judged that all of the iron has been 
peroxidized. Then it is acted upon by means of concentrated 
Hydrochloric acid, when all of the Iron and a little of the 
Silicia is brought into solution, the Titanium Oxide and 
remaining Silica being left as an almost white powder. In 
the acid solution the Iron can be estimated by the volumetric 
process, and the analysis completed within an hour from the 
beginning, a great gain in time over the older process. 
The President, Dr. J. S. Newperry, exhibited a Shaving 
of Wood, obtained by means of a newly-devised veneer cutting 
machine. It is of great tenuity, and seven feet long by 
two feet broad. 
Dr. L. FEucHTWANGER exhibited a specimen of Slag, from 
the furnaces in which the New Jersey Red Oxide of Zine is 
smelted. It is opaque, and of a peculiar yellowish green 
color, which he considered as due to the presence of Cadmium, 
He also made some remarks on the Crystallization of Minerals, 
illustrating what he said by means of specimens of Gold, 
Pyrites, Columbite and Quartz. He also presented a speci- 
men of White pulverulent Mineral from Watertown, Jefferson 
County, N. Y., which had been under discussion at late 
meetings of the society. He considered it to be Gurhofian, 
Analysis of it by Prof. C. F. Chandler, showed it consist of; 
Carbonate of Lime, 55°32 
Magnesia, 26°28 : 
Silat andes ae 
Oxide of Iron and Alumina, 1:28 
Water and loss, 1:79 
100° 
