I 



TLbc 



Botanical (^asette 



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Edited by John M. Coulter and Charles R. Barnes, with the assistance of other members of the 



botanical staff of the University of Chicago. 



Vol XLIV, No. 4 



Issued October 1% 1907 



CONTENTS 



THE CHRYSANTHEMUM RAY BLIGHT (with fifteen figures). J^. Z. S/evens - - 241 



ON THE IMPORTANCE OF PHYSIOLOGICALLY BALANCED SOLUTIONS FOR 



PLANTS. II. FRESH-WATER AND TERRESTRIAL PLANTS (with seven 

 figures). ^. /. F. Osterhout - - - - 259 



FERTILIZATION AND EMBRYOGENY IN EPHEDRA TRIFURCA. Contributions 



FROM THE Hull Botanical Laboratory 102 (with plates xx-xxii). W.J. G. Land 273 



THE DEVELOPMENT OF THE SEED IN PONTEDERIACEAE (with plate xxni). 



W, C, Coker -.-..-..------- 293 



BRIEFER ARTICLES 



Some New Washington Plants. H, H. Barflett - 302 



Some Perplexities of the Indexer. Mary A, Day .--.--- 304 

 CURRENT LITER A TURE 



BOOK REVIEWS 307 



PHYSIOLOGY AND ECOLOGY. JOST'S PLANT PHYSIOLOGY. THE MORPHOLOGY OF PLANTS 



MINOR NOTICES - - - 31^ 



NOTES FOR STUDENTS 3*3 



NEWS - - - . - - ' 320 



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