American Association. 31 
carried along by the tribe whose god it was, or else some 
casual refugee from the Orient had found his way with it in 
equally mysterious fashion to the western world. 
After the adze had been exhibited and compared with 
certain uncarved adzes of jade of inferior size and beauty, 
Mr. Kunz produced a curious cabinet, made of the skin of a 
Mexican lizard, which, when opened, revealed a skull of 
nearly natural size and almost transparent. It was carved 
of crystal, without flaw or fissure. It was discovered by a 
Mexican officer just before the Maximilian conquest, and 
sold to Mr. Evans, the English collector, at whose death it 
passed into the hands of a French dealer in curiosities, of 
whom it was purchased by Mr. George H. Sisson, of New 
York. As to its origin, little or nothing more is known. 
Crystal of the same character is found in Calaveras County, 
Cal. Although similar in general appearance to many of 
the Chinese and Japanese crystals, it was clearly not of 
Chinese or Japanese origin, or nature would have been 
more closely copied. And on the other hand, if it were of 
European origin, it would have been more carefully finished 
in certain minor particulars. In the Californian locality, 
large masses of crystal have been found, and from the State 
of Michoacan, Valley of Mexico, small skulls of this same 
material, measuring rarely more than two inches across, 
have often been brought, indicating that the ancient Mexi- 
cans were acquainted with a means of carving and polish- 
_ ing, not inferior in results to the best modern inventions, 
The skull is 8 3-16 inches long, 53 inches wide, and 5 11-16 
inches high. The eyes are conical hollows about 14 inches 
deep. The line separating the upper and lower teeth is 
thought to have been produced by a string or bow. 
Palin Baba, the Japanese, gave some reasons why the re- 
markable skull could not be considered of Japanese or 
Chinese origin, the substance of which was that it was not 
sufficiently true to nature in contour. 
Dr, Charles Porter Hart read a paper on “ The Correla- 
tion of Certain Mental and Bodily Conditions in Man,” 
He said his attention was first called to the subject by a 
patient who possessed such decided pessimistic views as to 
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