PROCEEDINGS 



OF THK 



CALIFORNIA ACADEMY OF SCIENCES 



Third Series 

 Botany Vol. II, No. ii 



Spindle Formation 



in the Pollen -Mother- Cells 



of Cassia tomentosa L 



BY 



Henri T. A. Hus 



With Three Plates 



Issued April 30, 1904 



SAN FRANCISCO 



Published by the Academy 



1904 



