Volume LXVIII Number i 



THE 



Botanical Gazette 



Editor: JOHN M. COULTER 



JULY 1919 



Development of Pluteus admirabilis and Tubaria furfuracea 



Leva B. Walker i 



(With Plates I-V and eight figures) 



Development of Root Systems under Dune Conditions. Contributions 



from the Hull Botanical Laboratory 250 - - - W. G. Waterman 22 



(With seventeen figures) 



Some Phyllachoras from Porto Rico - - F. L. Stevens and Nora Dalby 54 



(With Plates Vl-Vm) 



Apparatus for the Study of Photosynthesis and Respiration W. J. V. Osterhout 60 



(With one figure) 



Briefer Articles 



A Corn-Pollinator ---____ Merle C. Coulter 63 



(With one figure) 



Current Literature 



Book Reviews - - - - - - -- - - "65 



Life and letters of Hooker 



Minor Notices »_________ 55 



Notes for Students - - ______ __65 



The University of Chicago Press 



CHICAGO, ILLINOIS, U.S.A. 



THE CAMBRIDGE UNIVERSITY PRESS, London and Edinburgh 



THE MARUZEN-KABUSHIKI-KAISHA, Tokyo. Osaka. Kyoto. Fuhuoka. Sendai 



THE MISSION BOOK COMPANY. Shanghai 



