PROCEEDINGS 



OF THK 



CALIFORNIA ACADEMY OF SCIENCES. 



Third Series. 

 ^°'^ANY. Vol. I, No. 6. 



The Origin of the Karyokinetic Spindle 

 in Passiflora coerulea Linn. 



BY 



Clara L. Williams, M. S. 



With Four Plates. 



Issued April 75, i8gg. 



SAN FRANCISCO: 



Published by the Academy. 



1899. 



