Devoted Primarily to all Scientific Btudies o^Jwui* 



in Elementary Schc 



Vol. 10 No. 4 



OFFICIAL ORGAN OF THE 



CONTENTS 



Foreword 119 



A Study of the Hyacinth 120 



Anna B. Comstock 



Studies of Commercial Fertilizers 122 

 B. M. Davis 



Astronomy as Nature Study 



(Second Paper). E. A. Path. . 130 

 The Ways of Monarch Butterflies 132 



Florence E. Lillie 



The Nests of Some Common Birds 137 



Ralph E. Wager 



The Editorial 152 



News and Notes 154 



Nature Articles in Current Maga- 

 zines 157 



Book Reviews 158 



Published Monthly except Tune. July and 

 AuKUst at Ithaca. N. Y. 



I SAnSiiri^ Elliot R. Downing, Editor 



laVULUntJK The University of Chicago The School of Education 

 (9N»)JrA Chicago. 111. 



15 



^Cents 

 copy 



Entered as gecond-class matter at the PostofiBce at Ithaca, N. Y., under the Act of March '3, 1879. 



