64 Personal and Scientific Neios. 
sides, and so large that it was impossible to surmount them 
with the ordinary equipment of explorers. The glacier is es- 
timated to be about forty miles long. — Prof. G. F. Wright, in 
the Popular Science Monthly for June. 
Apropos the Mention of the Classification of the Cri- 
NOiDEA by Neumayr in his Stiimme des Thierreichs, another 
note may not be impertinent. The recent investigations among 
fossil crinoids have brought to light many features of great 
morphological import, rendering necessary some modifications 
in the existing S3^stematic arrangement. With this in view 
there will shortly appear, it is understood, a joint revised 
classification of the class, by Messrs. Wachsmuth and Spring- 
er, and Dr. P. H. Carpenter of England. The paper will be 
issued simultaneously in this country and Europe. 
The Marietta Scientific Association was recently organi- 
zed at Marietta,Ohio, for the promotion of scientific inquiry and 
the investigation of all scientific matters that may be of in- 
terest in the immediate vicinity of Marietta. It is tributary 
to Marietta college, and its collections will be deposited in the 
college museum. The president is T. D. Biscoe, and the cor- 
responding secretary is C. K. Wells. 
Prof. G. Frederick Wright, of Oberlin, recently made a 
cursory examination of some parts of the gorge of the Mis- 
sissippi river between Minneapolis and Fort Snelling, for the 
purpose of noting personally the points of evidence in the 
discussion of the recession of the falls of St. Anthony bear- 
ing upon the date of the glacial epoch, as brought out by 
Prof. Winchell in vol. ii, of the final report of the Minnesota 
survey. 
The Circular of the Permanent Secretary of the Toronto 
meeting of the American Association for the Advancement of 
Science has been issued. The session will begin August 27th 
at noon, by a meeting of the Council. The first general ses- 
sion will begin at ten o'clock on the 28th. The American 
Geological Society will hold a meeting at Toronto, Aug. 28th 
and 29th. 
So:\[etime ago Dr. Stephen Bowers, of Ventura, California 
reported that, in grading the streets of that city, some teeth 
and bones had been found which he supposed were those of a 
fossil llama. These teeth, together with some other foseils 
from Ventura county, have more recently been examined by 
Dr. Lorenzo G. Yates^ of Santa Barbara, and he pronounces them 
cusps of the tooth of a mastodon. This decision will probably 
be accepted by geologists owing to the well-known long study 
that Dr. Yates has given the subject of the mastodon, his re- 
mains and former distribution, in California. Remains of the 
mastodon have been found in so many places on the Pacific 
slope that it is plain that he roamed extensively over the plains 
of California. 
