It is well known that the Academy of Natural Sciences of Philadelphia is the recipient of important collections under its present organization. The Vaux collection of minerals which came to it last year, is one of the most valuable bequests made for many years. All the departments have increased rapidly, the botanical especially so. During the Centennial year the institution moved into its present quarters which gave double the room of the old building. Now this is found too small, and the citizens of Philadelphia are raising $200,000 to afford additional room for the enormous increase. This paragraph is penned in consequence of an editorial in the American Naturalist, which would be remarkable if it were not characteristic that the institution "is not likely to be the recipient of important collections under its present organization".