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confusion as to what the mineral really is. His informant, 
who was for a long time collector of customs, in a large 
Chinese port, told him that as far as he could learn, the real 
Jade was not a rare stone, but its value was purposely kept 
up by the dealers, and that in case a large quantity was for 
any reason, put upon the market at one time, they would 
combine and refuse to buy it. From his description, he, 
(Prof. E.,) gathered that there must be at least two stones 
called the Jade, one brought into China by ships trading at 
the different ports, brought as near as he could learn from 
New Zealand; the other, the transparent green stone, 
resembled some varieties of corundum, though he had never 
seen any corundum of this peculiar color. He had sent to 
both China and Japan for some of the minerals, which he in- 
tends to have cut and to examine optically, and if he could 
get enough of them, to analyse. 
Pror. B. N. Martin stated that he had received from 
Prof. Schlagintweit the statement that he had, when in Thibet, 
discovered the locality from which the Chinese had for gene- 
rations taken the Jadeite which they have been in the habit 
of carving, and which they regard with a sort of veneration. 
The mineral when taken from the quarry, was soft, and could 
be cut and carved readily ; and he had put up the specimens 
without suspecting the probability of any change. On un- 
packing them, however, a year or two after, he found them 
very hard. They had evidently undergone a marked change. 
Prof. S. exhibited several specimens of the mineral in his 
lectures. 
October 30th, 1871. 
The President in the chair. Nineteen persons present. 
Dr. L. FEUCHTWANGER exhibited a Crystal of Quartz. from 
Nova Scotia, with fine hair-like crystals of what seemed to be 
Pyrolusite traversing it. 
