A PEES 
AMERICAN NATURALIST 
EDITED BY 
ROBERT P. BIGHLOW, PH.D., 
Massachusetts Institute of Technology, Boston. 
WITH THE ASSISTANCE OF AN EDITORIAL Sora AND THE FOLLOWING 
ASSOCIATE EDITORS : 
E. A. ANDREWS, PH.D., Johns Fraa = Baltimore. 
G. BAUR, PH.D., University of Chicag 
WILLIAM S. BAYLEY, Pu.D., Colty eid Waterville. 
CHARLES E. BEECHER, PH ie Yale University, New Haven. 
DOUGLAS H. CAMPBELL, PH.D., Leland Stanjord Junior University, Cal. 
J. H. COMSTOCK, S.B., Cornell University, It Lthac 
Agere M. DAVIS, M.E. Harvard Univ, Berii, Cam 
. S: JORDAN, LL.D., Leland Stanford Junior Cniversiy, Cali ifornia. 
c PALACHE, PH.D., Harvard University, Cambridge. 
D. P. PENHALLOW, S.B., F.R.M.S., McGill University, Montreal. 
H. M. RICHARDS, $. D., Columbia University, New York. 
W. E. RITTER, P#.D., Unioerely sides beste rkeley. 
FRANK RUSSELL, A A.B., rvard University, Cambridge. 
ERWIN F. SMITH, S.D., ws amen of REA Washington. 
W. TRELEASE, S.D, Miss souri ee —— St. Lou 
S. WATASE, PH.D., University of Chic 
THE AMERICAN NATURALIST is an illustrated monthly magazine 
of Natural History, and will aim to present to its readers the leading 
facts and discoveries in Anthro pology, General Biology, Zoology, 
Botany, Paleontology, Geology and Physical Geography, and Mine- 
ralogy and Petrography. The contents each month will consist of 
leading original articles containing accounts ane 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 their contributions, but the editors will endeavor to select 
for publication only that which is of truly scientific value and at the 
same time written so as to be intelligible, instructive, and interesting 
to the general scientific reader. 
All manuscripts, books for review, exchanges, etc., should be 
sent to the editor at the Massachusetts Institute of Technology, 
Boston, Mass 
All business communications should be sent direct to the 
publishers. 
Annual subscription, $4.00, net, in ad in ;, in advance. Single copies, 35 cents. 
GINN & COMPANY, PUBLISHERS. 
