folios were prepared under the immediate direction of Professor 

 C.-E. A. Winslow, Curator of the Museum's Department of 

 Public Health. They are in great demand, especially by the 

 teachers of High Schools, and their further duplication must 

 soon be undertaken. The collections now comprise minerals, 

 rocks, woods, sponges, corals, sea-urchins, starfishes, mollusks, 

 worms, crabs, insects, birds and small mammals, as well as the 

 public health folios. The following statistical table illustrates 

 the growth of this branch of the work: 



Growth of the Circulating Nature Study Collections 





1904 



1905 



1906 



1907 



1908 



1909 



Number of 

 Collections 



120 



400 



435 



450 



484 



435 



in use 















Number of 















Schools of 

 Greater New 



1 15 



200 



300 



325 



383 



419 



York supplied 















Number of 















Pupils studying 

 the Collections 



20,000 



375,000 



800,000 



725,000 



575,801 



922,512 



1913 



Number of 



Collections 



in use 



Number of 



Schools of 



Greater New 



York supplied 



Number of 

 Pupils studying 

 the Collections 



597 



501 



1,275,890 1,378,599 



At the present time there are 597 of these study collections 

 available for use, and, in addition to the regular series, from 

 time to time special collections have been prepared to meet the 

 needs of some special occasion. 



A complete list of the circulating nature study collections 

 will be found in Appendix I. 



