SCIENCE 



A WEEKLY JOURNAL DEVOTED TO THE ADVANCEMENT OF SCIENCE, PUBLISH- 



ING THE OFFICIAL NOTICES AND PROCEEDINGS OF THE AMERICAN 



ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE. 



NEW SERIES. VOLUME XXVII. 



JANUARY- JUNE, 1908 



NEW YORK 



THE SCIENCE PRESS 



1908 



■ZOSASS 



