PROCE^EDINGS 



OF THE 



CALIFORNIA ACADEMY OF SCIENCES. 



Third Series. 

 Botany. 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, iSgg. 



SAN FRANCISCO: 



Published by the Academy. 



1899. 



