The Botanical Gazette 
A Monthly Fournal Embracing all Departments of Botanical Science 
ited by JoHN M. CouLTeR and CuHaRLes R. BARNES, with the sone of other members of the 
botanical staff of the University of Chic 
Issued August 21, 1909 
ol. XLVI CONTENTS FOR AUGUST 1909 No. 2 
VOLUTIONARY TENDENCIES AMONG GYMNOSPERMS. CoNTRIBUTIONS FROM THE 
HULL BoranicaL LABORATORY 127. /John M. Coulter - 81 
NY SIMILARITY IN THE BEHAVIOR OF SODIUM AND POTASSIUM ne FOUR FIG- 
URES). W.J.V. Osterhout - 98 
OXIC AND ANTAGONISTIC EFFECTS OF SALTS AS RELATED TO AMMONIFICA- 
TION BY BACILLUS SUBTILIS (WITH FIVE FIGURES). Chas. B. Lipman - 105 
B E GAMETOPHYTES OF CALOPOGON (wirH PLATES vu-Ix). Zula Pace - - 126 
N MESARCH STRUCTURE IN LYCOPODIUM (witn pLate x). Edmund W. Sinnott - 138 
RIEFER ARTICLES 
Some HITHERTO UNDESCRIBED PLANTS FROM OREGON. jf. i. poetics - : - 146 
IRRENT LITERATURE 
BOOK REVIEWS 2 is . sd ss ¥ i * < - - > - 149 
ECOLOGY OF PLANTS. EXPERIMENTAL MORPHOLOGY. THE VEGETATION OF SWITZER- 
LAND ; 
MINOR NOTICES Serer oie 2 uk E f E é = - - - 154 
NOTES FOR STUDENTS - a ‘ 2 2 ? : z : - - - wi LOZ 
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