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\ Devoted Primarily to all Scientific Studies of Nature 

 in Elementary Schools 



Vol. 11 No. 6 

 Whole No. 93 



OFFICIAL Of?GAN OF THE 



/AMEBICAK 

 C N 



Published Monthly except June, July and August at Ithaca, N. Y. 

 Entered as second-class matter at the Postoffice at Ithaca, N. Y., under the Act of March 3, 1879. 



