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lack of space will preclude any considerable further expansion.

It has been impossible, of course, to place on exhibition all the materials collected, and the large number of specimens left over has been roughly arranged, under technical headings, in two storage cases. As the collection grows, it is to be hoped that this mass of interesting and valuable material may be made available to students. For the present, all that can be done is to provide for its safe keeping. The culling and arrangement of duplicates, to be used for exchanging, also remains to be attended to. It is not to be expected, however, that this feature will attain the same proportions in the Section of Graphic Arts, which it has attained in other departments of the Museum, dealing with the products of nature. During the period covered by this report, only one specimen has been obtained by exchange. 

A most valuable subdivision of the sec-