‘Vol. XL No. 2 
THE 
OTANICAL GAZETTE 
August, 1905 
Seen ee ee es OR ee a a ee ee 
Editors: JOHN M. COULTER and CHARLES R. BARNES 
CONTENTS 
Sporogenesis in Pallavicinia Andrew C. Moore 
Regeneration in Plants. I William Burnett McCallum 
On Proteolytic Enzymes Arthur L. Dean 
Contributions to the Biology of Rhizobia Albert Schneider 
Briefer Articles 
The Vitality of Seeds W. J. Beal 
Some Mexican Species of Cracca, Parosela, and Meibomia 
J- N. Rose and Jos. H. Painter 
A New Krynitzkia : J. M. Greenman 
Current Literature 
News 
The University of Chicago-Press 
CHICAGO and NEW YORK 
William Wesley and Son, London 
