Botanical Gazette 



a /iBontbIs Journal JEmbracfna all 2)epartmcnt6 of JSotanlcal Science 



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Vol. XXXIV. No. 



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Berlin SW. 46, Schonebergerstr. 17a. 19 Marks 



Issued Auffust 2 J. 1902 



CONTENTS 



THE ELECTRICAL CONDUCTIVITY OF PLANT JUICES (with two figures). Fred. 



D. Heald - - - . - 



ON THE NATURE OF THE STIMULUS CAUSING THE CHANGE OF FORM AND 



STRUCTURE IN PROSERPINACA FALUSTRIS. Contributions from the Hull 

 Botanical Laboratory. XXXVII (with ten figures). Wiiliajn Burnet McCallum 



CONTRIBUTIONS TO THE BIOLOGY OF RHIZOBIA. L Rhizobia Mutafule in Arti- 

 ficial Culture Media (with plate i). Albert Schneider . - - . 



NOTES ON CERTAIN SPECIES OF ANTENNARIA. Elms Nelson 



A SURVEY OF THE HURON RIVER VALLEY. 1. The Ecology of a Glacial Lake 



(with four figures). Hozuard S. Reed --.---- 



BRIEFER ARTICLES. 



The Trichome Structures of Erodium Cicutarium (with fourteen figured), 



Francis Ramaley ...-.---- 



Two Fern Monstrosities (with five figures). Edwin Bingham Copeland - 



CURRENT LITER A TURE. 



BOOK REVIEWS - - - 



Goebel's Organography. 



minor notices - ....---- 



notes for students ...-.---• 



NEWS - . . \ . . . . • - 



81 



93 



109 

 114 



125 



140 



U2 



145 



146 



157 



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