PRERAGE: 
The following technical paper on the Spermatogenesis and Fecunda- 
tion of Zamia, by Dr. Herbert J. Webber, embodies the results of 
investigations started by him several years ago at our tropical labora- 
tory in Florida. The time at his disposal for this work was very 
limited, so that it has extended over a much longer period than was 
at first expected. 
As an aid to the practical work of plant breeding it is highly 
important that a more thorough knowledge of the reproduction. of 
plants be gained. Such investigations throw light on the phenomena 
of heredity, which are at the foundation of plant breeding work. The 
present paper is of especial interest because the large size of the sexual 
nuclei in Zamia has enabled Dr. Webber to work out some of the phe- 
nomena of fecundation with greater exactness than has ever been done 
before. 
ALBERT F. Woops. 
OFFICE OF THE PATHOLOGIST AND PHYSIOLOGIST, 
Washington, D. C., July 20, 1901. 
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