PROCEEDINGS 



OF THE 



CALIFORNIA ACADEMY OF SCIENCES. 



Third Series. 

 Math. -Physics. Vol. I, No. 2. 



The Quadratic Cremona Trans- 

 formation. 



BY 



Leonard E. Dickson, Ph. D. 



Instructor in Mathematics, University of California. 



Issued February /, 1S98. 



SAN FRANCISCO: 



Published by the Academy. 



1898. 



