TABLE OF CONTENTS 
The climax forest of Isle Royale, Lake Superior, 
and its development. I. Contributions from 
the Hull Botanical rarer otes - (with map 
and fourteen figures) - - William S. Cooper 
Progressive and retrogressive ‘iene 3 in the plant 
associations of the Delaware Coast —_ six 
gure - Laetitia M. Snow 
Ray rackeuds in te Coniferater (with plates 1 I 
and II) - Ruth Holden 
The life history of eubeiecneo (with a 1) - Edgar N. Transeau 
Hydrodictyon africanum, a new species. Contribu- 
tions from the Hull Botanical career’ 166 
(with six figures) - - Shigéo Yamanouchi 
Revegetation of a denuded area (with two beaies) H. S. Conard 
The morphology of Araucaria brasiliensis (with 
eleven figures and plates IV and V) -  L. Lancelot Burlingame 
The climax forest of Isle Royale, Lake Superior, 
and its development. II. Contributions 
from the Hull Botanical a ee (with 
sixteen figures) = - - - William S. Cooper 
Macrozamia Moorei, a conheeting link paween 
living and fossil cycads. Contributions from 
the Hull Botanical sobs 168 (with 
twelve figures) . - Charles J. Chamberlain 
A protocorm of Ophioglossum. Coitribations 
from the Hull Botanical a 167 aa 
thirteen figures) - - - L. C. Petry 
Inheritance of flower size in crosses between species 
of Nicotiana (with plates VI-X)_ - E. M. East 
The climax forest of Isle Royale, Lake SEES eid 
its development. III. Contributions from the 
Hull Botanical oe sig hes — 
five figures) - - - William S. Cooper 
Studies on the phloem of the Ditoryiedind Con- 
tributions from the Hull Botanical Laboratory 
169 (with plate XI and three figures) - - Ansel F. Hemenway 
Vv 
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