THE 
BoTANICAL GAZETTE 
Editor: JOHN M. COULTER 
January I9r3 
The Climax Forest of Isle Royale, Lake Superior, and Its 
Development. I William S. Cooper 
Progressive and Retrogressive Changes in the Plant Asso- 
ciations of the Delaware Coast Laetitia M. Snow 
Ray Tracheids in the Coniferales Ruth Holden 
The Life History of Gloeotaenium Edgar N. Transeau 
Hydrodictyon africanum, a New Species Shigéo Yamanouchi 
Revegetation of a Denuded Area H. S. Conard 
Current Literature 
The University of Chicago nis: eo) 
meena aks ILLINOIS, U.S.A. Ea gi ee 
‘ial 
Agents 
THE (CAMBRIDGE UNIVERSITY PRESS, London and Edinburgh 
M WESLEY & SON, L 
TH. STAUFFER, ae 
THE Tokyo, Osaka, Kyoto 
