RT Journal Article
SR Electronic
T1 Address before the American Association at its recent meeting in Dubuque, Iowa
JF American Journal of Science
JO Am J Sci
FD American Journal of Science
SP 282
OP 298
DO 10.2475/ajs.s3-4.22.282
VO s3-4
IS 22
A1 Asa Gray
YR 1872
UL http://www.ajsonline.org/content/s3-4/22/282.abstract
AB