ri6TOI5E-5T 



\ Devoted Primarily to all Scientific Stud 



in Elementeury Schools 



Vol. 10- No. 2 

 Whole No. 80 



OFFICIAL OI?GAN OF THE 



/AMERICAN" 



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



