The American Naturalist 
ASSOCIATE EDITORS : 
J. A. ALLEN, PH.D., American Museum of Natural History, New York. 
E. A. ANDREWS, PH.D., Johns Hopkins University, Baltimore. 
WILLIAM S. BAYLEY, PH.D., Colby University, tocol 
CHARLES E. BEECHER, PH.D., Yale University, New Hav 
DOUGLAS H. CAMPBELL, PH.D., Zeland ie Junior Univiveity. Cal. 
J- H. COMSTOCK, S.B., Cornell University, Tt 
WILLIAM M. DAVIS, M.E., Harvard Cert, Cue idge. 
ALËS HRDLICKA, M.D., Vew 
D. S. JORDAN, LL.D., Zeland Siasia Jaor University, California. 
CHARLES A. KOFOID, PH.D., University of Milinots, Urbana, Til. 
J. G. NEEDHAM, Pu.D., Lake Forest University. 
ARNOLD E. ORTMANN, Pu.D., Princeton Univer 
D. P. PENHALLOW, S.B., F.R.M.S., McGill Universi Montreal. 
H. M. RICHARDS, S.D., Columbia University, New Yi 
W. E. RITTER, PED, Pa Sd of California, EG 
FRANK RUSSELL, Pu.D., Harvard University, Cambridge 
ISRAEL C. RUSSELL, D University of Michigan, Ani Arbor. 
ERWIN F. SMITH, S.D., U. S. Department of Agriculture, Se 
- LEONHARD STEJNEGER, Smithsonian Institution, A ngton 
W. TRELEASE, S.D., Missouri Botanical Garden, St. Loui 
HENRY B. WARD, PH.D., University of Nebraska, Lincoln. 
S. WATASE, Pu.D., Taewa of Chicago. 
F 
E AMERICAN NATURALIST is an illustrated monthly magazine 
of Natural History, and will aim to present to its readers the leading 
facts and discoveries in Anthropology, General Biology, Zoology, 
Botany, Paleontology, Geology and Physical Geography, and Miner- 
alogy and Petrography. The contents each month will consist of 
leading original articles containing accounts and discussions of new 
discoveries, reports of scientific expeditions, biographical notices of 
distinguished naturalists, or critical summaries of progress in some 
line ; and in addition to these there will be briefer articles on various 
points of interest, editorial comments on scientific questions of the 
day, critical reviews of recent literature, and a final department for 
scientific | news and personal notices. 
All naturalists who have anything interesting to say are invited 
to send in therr contributions, but the editors will endeavor to select 
for rea =. that which is of truly scientific value and at the 
me written so as to be intelligible, instructive, and interesting 
to the a scientific reader. 
1 manuscripts, books for review, exchanges, etc., should be 
sent to THE AMERICAN NATURALIST, Cambridge, 
All business communications should be sent direct to the 
publishers. 
Annual subscription, $4.00, net, t, in advance. Single copies, 35 cents. 
Foreign subscription, $4.60. 
GINN & COMPANY, PUBLISHERS. 
