Gbe Botanical <Sa$ette 



B fcontblB Journal Embracing all departments of botanical Science 



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



botanical staff of the University of Chicago. 



Issued May 21, 1909 



7oL XLVIl 



CONTENTS FOR MAY J909 No » 5 



MEGASPOROPHYLL OF SAXEGOTHAEA AND MICROCACHRYS (with plates 



xxii-xxv). Robert Boyd Thomson 



345 



DIES ON THE OXIDIZING POWERS OF ROOTS. Oswald Schreiner and Howard S. 



htd 



355 



W TOXINS AND THEIR EFFECT UPON SOILS (with two figures). Alfred Dachnowski 3§9 



■FER ARTICLES 



' 



W. T. Saxton - - - 4°6 



Parthenogenesis in Finns pinaster (with seven figures). W. T. Saxton - 

 Carnation Alternariose (with eight figures). F. L. Stevens and J. U.uau 



409 



**, 



VRENT LITER A TURE 



BOOK REVIEWS 



4M 



I ANOTHER MUSHROOM BOOK. TREES AND WOODS. MICROSCOPY OF 



I PRODUCTS. WORKS OF LEO ERRERA 



VOTES FOR STUDENTS ----"" 



418 



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