- TABLE: Gr CONTENTS. 
The morphology of Elodea canadensis. Contribu- 
tions from the Hull Botanical ere si LIT. 
(with plates I-IV) 
Robert B. Wylie 
Chemotropism of roots - Frederick C. Newcombe and Anna L. Rhodes 
Botanical Bee of the Huron River Valley. Il. A 
at bog and morainal lake (with six ee 
Southwestern plants - - : 
On a self-recording method Spied to the movements 
of stomata (with fifteen figures) = - 
The archegonium of Mnium cuspidatum. Contribu- 
tions from the Hull Botanical ae 
LIII (with plates V and VI) 
Studies on some anomalous coon lan plants 
(with plates VII and VIII) - 
The life history of Ricciocarpus natans. Contribu- 
tions from the Hull Botanical Laboratory. LIV 
(with four figures and plates IX and X) - - 
Vegetative cell division in Allium is _ pa 
IIT) - 
Undescribed mee from Guatemala and other Central 
American republics. XXV. - - 
Are roots aerotropic ? (with five figures) - . 
Contributions from the — Mountain Herbarium. 
The evolution of the sex organs of plants. Contribu- 
tions from the Hull Botanical penis < L 
(with sixteen figures) - - 
The evolution of monocotyledons (with six es 
The nutrition of the egg in Zamia. Contributions 
from the Hull Botanical er LVI. 
(with six figures) - - 
A contributien to the life gaged of Aster dae: pats 
V end XV) 
Lewis H. Weld 
Leslie N. Goodding 
Francis Darwin 
G. M. Holjferty 
Charles E. Lewis 
John F. Garber 
Mabel L. Merriman 
John Donnell Smith 
Mary Ella Bennett 
Aven Nelson 
Florence Lyon 
Ethel Sargant 
Isabel S. Smith 
Marie Opperman 
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