236 PROCEEDINGS : BOSTON SOCIETY NATURAL HISTORY. 
January 3, 1900. General meeting. Fifty-six persons present. 
Prof. F. G. AVriglit. New light on the age of the Niagara 
gorge. 
Mr. R. T. Young. A brief report on the mammals of Prince 
Edward Island. (By title.) 
January 17, 1900. General meeting. Thirty persons present. 
Dr. R. T. Jackson. Some cases of old age characters in inver- 
tebrates. 
February 7, 1900. General meeting. Thirty persons present. 
Dr. C. S. Minot. Notes and illustrations of mammalian devel¬ 
opment. 
Dr. G. H. Parker. The correlation between the size of litters 
and the number of mammary glands in the swine. 
Dr. R. P. Bigelow. Notes on the development of Cassiopea. 
Dr. C. S. Minot. On the solid or closed condition of the 
intestine in the chick. 
Dr. C. S. Minot. On a hitherto unrecognized form of blood 
circulation without capillaries, in the organs of vertebrata. 
(By title.) 
Prof. M. A. Willcox. A revision of the systematic names 
% * 
employed by writers on the morphology of the Acmaeidae. 
(By title.) 
February 21, 1900. General meeting. Forty-five persons present. 
Prof. C. H. Fern&ld. The gypsy moth in America. 
March 7, 1900. General meeting. Fifty-eight persons present. 
Dr. Frank Russell. The Moki snake dance. 
March 21, 1900. General meeting. Eiglity-six persons present. 
Prof. W. M. Davis. Glacial erosion in the Alps and in 
N orway. 
April 4, 1900. General meeting. Twenty-eight persons present. 
Dr. G. H. Parker. The neurone theory in the light of recent 
investigations. 
c 1 
April 18, 1900. General meeting. Thirty-seven persons present. 
Mr. J. H. Emerton. The common species of American spiders. 
Publications. 
During the year the following publications have been issued: — 
Proceedings of the annual meeting, May 8, 1899. Proceedings, 
vol. 29, no. 1, 43 pp. 
