Trans. N.. Y. Ac. Scz. 64 /a7i. 22, 



€St to a lecture, illustrated by many diagrams, by Prof. Edward D. 

 Cope, of Philadelphia, on 



THE EVOLUTION OF THE VERTEBRATA. 



January 22, 1883. 



The President, Dr. J. S. Newberry, in the Chair. 



Seventy-five persons present. 



Mr. G. F. N. KuNZ exhibited specimens of chrysoberyl, of remark- 

 able size (one five by three inches), and crystalline marking, from 

 Canton and Stowe, Me., and of rhodochrosite on drusy quartz from 

 the Clay mine. Lake City, Col. ; and Mr. N. L. Darton, specimens 

 of franklinite and chalcophanite from Sterling, N. J., iron ores from 

 Marquette, Mich., and tabular calcite with drusy quartz from 

 Anthony'a Nose, N. Y. 



A paper was read by Prof. Edward P. Thwing on 



the treatment of se.\-sickness bv the trance state. 



(Abstract). 



The phenomena of the trance have interested me for more than 

 twenty years. For two years my experiments have confirmed the 

 theory of Dr. Geo. M. Beard, that the concentration of the mind's 

 attention in one direction induces an insensibility to other things, more 

 or less complete. President Porter (Elements of Intellectual Science, 

 section 81) says that pure sensation is simply an ideal or imaginary 

 experience, and that, as the perceptional element is made stronger, the 

 sensational is weakened. The intensity of the one is the suppression 

 of the other. Some persons can excite expectancy sooner than others, 

 and so gain control quicker. Some subjects take a consenting attitude 

 more readily than others. One yields instantly, another only after 

 repeated interviews, and some, perhaps, may never yield at all. 



Nine cases of sea-sickness, occurring in the Atlantic and in foreign seas, 

 are selected from many, to illustrate the speedy relief, often the complete 

 cure, of this distressing ailment. Some showed little somnolence, while 

 others sunk into as complete insensibility as in ordmary anaesthesia by 

 chloroform. 



One patient had been unable to retain any nourishment on the 

 stomach after leaving port, two days' previous. Manipulations began 

 about the temporal and frontal regions, particularly along the super- 



