Vol. XLV 



No. 6 



y 



June 190 



Q 



JOHN M. COULTER and CHARLES 



CONTENTS 



Relation of Megaspores to Embryo Sacs in Angio- 



sperms 



John M. Coulter 



The Physiology and Development of Some 



Anthrac- 



noses 



Claude Wilbur Edgerton 



iefer Articles 



On the Contents of the Pollen Chamber of a Specimen^of 



Lagenostoma ovoides 

 The Embryo of Ceratozamia: A Physiological Study 



Margaret Benson 

 Helen A. Dorety 



Current Literature 





The University of Chicago Pre 



CmCAGO and NEW YORK 

 William Wesley and Son, London 



QC 



