THE GUIDE TO NATURE— ADVERTISEMENTS 
XVII 
An Artists' Drawing Crayon 
The box pictured contains 
24 crayons of the very best 
quality. For artists and 
Students of Nature, to be 
used for 
sketching and 
general color 
work. 
“Crayola” is 
put up in all de- 
sirable styles 
of packing, 6 
to 24 colors in 
a box. 
Color charts and 
catalog on request. 
EINNZY <* 
SMITH CO., 
81 Fulton St., 
New York. 
<SOERZ 
The universal lens for 
amateur and commer- 
cial photography. 
Perfectly corrected — 
Wide angle at small 
stops — 
Long focus with the 
single element. 
Uniform illumination 
Sharp definition — 
Ask your dealer. 
, CP. GOERZ AMERICAN OPTICAL COMPANY , 
k 3 1 7 6 EAST 34 tm street : new vork city 
B!RD-L0RE 
A Bi-Monthly Magazine 
EDITED BY FRANK M. CHAPMAN 
500 Pages, 6 Colored Plates 
150 Photographs 
Price yearly, one dollar and a half. 
It will tell you how to study b'rds, how 
to form and conduct bird clubs, how to 
make nesting boxes, feeding stands and 
bird baths. You may consult its Advisory 
Council, take part in its bird censuses and, 
in short, become one of the great frater- 
nity who finds in birds ‘ the most elo- 
quent expression of nature’s beauty, joy 
and freedom.” 
We will be glad to mail you 
a specimen copy on request. 
D. APPLETON & CO. 
Harrisburg, Pennsylvania 
T tiE BRYOLOGIST — The only magazine in the Eng- 
lish language devoted wholly to articles dealing witi 
Mosses, Hepatics, and Lichens. Of interest to be- 
ginners and advanced students alike. Bimonthly, pub- 
lished by the Sullivant Moss Society, an organization 
for mutual help in moss study. Special curators to 
assist beginners. Membership fee, $1.50 per year, »»- 
eluding the Bryoloeist; subscription alone, $1.25; Cana- 
dian postage 10 cents extra. Address Edward B. Cham- 
berlain. 18 West 89tb Street. New York City. 
THE 
AMERICAN MICROSCOPICAL SOCIETY 
(Founded in 1878) 
Publishes Its TRANSACTIONS as a 
Quarterly Journal of Microscopic Research. 
For information, write to 
P. S. WELCH, Secretary 
ANN ARBOR. MTCHTGAV 
Best wishes for your further success 
with this bright entertaining and most 
instructive paper. — John M. Sheridan. 
Brooklyn, New York. 
