616 KANSAS CITY REVIEW OF SCIENCE. 
them. On the 24th the piece three and a half feet long, now in possession of 
the Academy of Science at Kansas City, was found together with another piece 
one and a half feet long. This short piece was from near the point and the 
large piece appears to be the base of the tusk, as one end is more decayed than 
the other, evidently showing that this part had been in the mouth and not cov- 
ered by as perfect an enamel as the other portion. These two pieces did not fit 
together, and there appeared to be a part missing from between them. The last 
two pieces lay side by side and but three or four inches apart with the broken 
ends both pointing the same way. The first two laid in a right line and about a 
foot apart, and about three feet away from and above those found on the 24th. 
The well shows about eight feet of earth and then seven feet of solid rock. 
Below this rock is a bed six feet in depth of soft mud mixed with gravel. This 
was once a subterranean stream, the cavity being only six feet wide and walled 
with solid rock. In clearing out this mud that ran into the well from this cavity 
the tusks were found, they not being in the well but about three back in the 
cavity. Just where the tusks were found the rock overhead ended, apparently, 
showing that at some time the mouth of the spring (which now comes to the sur- 
face a hundred yards down the hill) was at this point and had been a watering- 
place for the huge animals of that remote time. 
PROCEEDINGS OF SOCIETIES. 
MEMORY. 
DR. R. WOOD BROWN. 
\Read before the Kansas City Academy of Science, December 21^ /<?<??.] 
Mr. President, Ladies and Gentlemen : — There is no subject of Nature 
so interesting as psychology. Man, ever since his creation, has been trying to 
penetrate the mystery, mind, and after thousands of years the subject is just as 
obscure as it was to the first investigator. The physiologist alone has been re- 
warded, the psychologist is still stri/ing to wrest from Nature this her most sub- 
tle secret. 
We shall, this evening, show how memory acts from a physical standpoint, 
also the theories advanced explanatory of the action of the mind. We may say 
that memory is an attribute of the mind, but it would be more correct to say that 
they are synonymous, and that thought and imagination are attributes of memory. 
Science has not been able to explain the causation of memory, but her 
votaries have done much toward explaining physically the action of it. It must 
be remembered, that while the data are voluminous, and the number of nerve 
fibres and cells estimated, the conclusions arrived at are in many cases hypothet- 
