You are not currently logged in.
Access JSTOR through your library or other institution:
New Series, Vol. 97, No. 2522 (Apr. 30, 1943), pp. 385-10
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/1669633
Page Count: 3
Preview not available
Science © 1943 American Association for the Advancement of Science