Your PDF has successfully downloaded.
You may be interested in finding more content on these topics:
You are not currently logged in.
Access JSTOR through your library or other institution:
Proposed Lincoln Schools of Science
New Series, Vol. 29, No. 738 (Feb. 19, 1909), pp. 291-292
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/1636390
Page Count: 2