vi CONTENTS [VOLUME LIII 
Do the Abietineae extend to the Carboniferous ? 
(with plate XXVI and two figures 
Robert Boyd Thomson and Arthur Everett Allin 
Relations of parasitic fungi to their host plants 
(with nine figures) - Ernest Shaw Reynolds 
The influence of the seed upon ie size of the fruit 
in Staphylea. IL (with one figure) - - J. Arthur Harris 
The vegetation of Skokie Marsh, with special 
reference to subterranean organs and their © 
interrelationships. Contributions from the 
Hull Botanical ne 155 (with ten 
figures) - - Earl E. Sherff 
The formation of eee tissue in the sendells 
of Passiflora caerulea as influenced ma tension 
and contact (with three figures) - W. D. Brush 
A comparison of the rates of evaporation in certain 
associations in central Illinois (with six 
figures) - - - Henry Allan Gleason and Frank Caleb Gates 
A study of Targionia hypophylla. Contributions 
from the Hull Botanical ve = (with 
thirteen figures) - Herman Deutsch 
A precision auxanometer « (with two figures) - - W. T. Bovie 
BRIEFER ARTICLE 
_ Development a the zygospore of Rhizopus 
nigricans (preliminary notice) - - ~ Florence A. . cCormick 
A new Californian Ceanothus - LeRoy Abrams 
Susan Maria Hallowell (with ceGieit): M argaret C. Ferguson 
Two epiphytic algae: a correction  - Julia W. Snow 
Abnormalities in aie of Pteris longifolia 
(with four figures) Norma E. Pfeiffer 
Sir Joseph Dalton Pocker (with coreeaits - J. M. Greenman 
Some plants of western America - - - J. M. Greenman 
Soil moisture in the cottonwood dune associa- 
tion of Lake Michigan (with one figure) - Geo. D. Fuller 
CURRENT LITERATURE - - 69, 181, 240, 348, 
For titles of book reviews see idee cies des 
author’s name and rev 
Papers noticed in “Notes | ss Students” are 
indexed under author’s name and subjects 
DATES OF PUBLICATION 
PAGE 
441 
No. 1, January 17; No. 2, February 20; No. 3, March 15; No. 4, April 15; 
No. 5, May 15; No. 6, June 17. 
