156 
February 6th, 1871. 
Pror. T. Eaueston, Jr., Vice-President in the chair. 
Kighteen persons present. 
Mr. R. DINWIDDIE, as chairman of the Committee appoint- 
ed to nominate officers for the ensuing year, reported a ticket 
which was ordered to be printed ; the Vice-President explain- 
ing that the printing of such a ticket did not, of course, 
prevent the presentation of other nominations. 
Dr. L. FEUCHTWANGER reported that he had completed 
his examination of the Mineral which he had presented at a 
former meeting, and which came from Thunder Bay, on the 
North shore of Lake Superior. He had found in it twenty- 
five per cent. of Nickel, besides the other metals he had 
before mentioned; the other prevailing metal besides the 
Nickel is Silver. 
Pror. T. EGLESTON remarked that he had been examining 
this mineral, or rather ore, with some care, because there 
were facts of interest connected with it. It had been 
considered by the discoverer to constitute a good and new 
mineralogical species; a native alloy of Nickel and Silver. 
The results he, Prof. EK. had arrived at, contradicted this 
assumption. When the metallic portion alone was examined 
after careful separation, no traces of Nickel were found in it; 
in fact it was essentially native Silver. On the contrary, 
when the whole mass was crushed and the powder thus 
obtained, analyzed Nickel was found. Such a mechanical 
mixture of metallic Silver and a Nickel ore was by no 
means uncommon. Thus at Schneeberg, in Germany, such 
a mixture occurs where the Silver in fine threads is dissemi- 
nated through the Nickel ore. In fact, the Silver then be- 
comes the metal of the ore whilst the Nickel is present in 
the gangue. 
He also reported that he had examined the specimen 
exhibited by Prof. Seely at the last meeting, and which had 
