The Natural History Society.

The Natural History Society held Its 811th regular meeting in Sever 5 last evening. The general topic chosen for discussion was "Problems in the Determination of Species."

The papers were: Specific Differences in Plants-J. W. Blankinship; Studies on the Smaller Mammalia-G. S. Miller; The Butterflies of the Genus Satyrus-W. L. W. Field.