THE GUIDE TO NATURE— ADVERTISEMENTS 
XIII 
DODSON WREN 
HOUSE 
4 compartments, 28 
inches high, 18 inches 
in diameter. 
A SIJMIVIFR HOME ! 
All song birds raise two, and 
usually three, broods of young 
each year, selecting a new nest- 
ing site for each brood of young, 
so if your houses are put out 
now they are sure to be occupied. 
DODSON HOUSES 
win the birds. Built by a bird- 
lover who has spent a lifetime 
studying their habits and how to 
attract them to beautiful Bird 
1 odge, his home on the Kan- 
kakee River. 
Free Bird Book sent on re- 
quest. illustrating Dodson Line, 
giving prices; also beautiful col- 
ored bird picture free. 
JOSEPH H DODSON 
Pres. American Audubon Ass’n, 
714 S. HARRISON AVE., 
KANKAKEE. ILL. 
Dodson Sparrow Trap guaranteed to rid your community 
of these quarrelsome pests. Price $8.00. 
Girl Scouts camp, hike and live close to 
Nature. Read about their good times in 
THE AMERICAN GIRL 
A Magazine for Girl Scouts and Girls 
who love Scouting. 
The American Girl will bring you suggestions 
for parties — stories and other things besides. 
Send for sample copy to 
THE AMERICAN GIRL 
189 Lexington Avenue, New York City. 
$1.50 a year — Single copy 15c 
It yields comfortably to the shape of 
the body, is soft yet firm, and induces 
perfect relaxation and rest. The Oster- 
moor Mattress is scientifically built, not 
stuffed like horsehair; it cannot get out 
of shape and is sanitary. Replace with 
Ostermoor as your old mattresses become 
uncomfortable. 
At your dealer’s, or we will ship direct; 
express prepaid. Write for 144-page Cat- 
alog — mailed free. 
Ostermoor & Co., 114 Elizabeth St., 
New York. 
Canadian Agency: 
Alaska Bedding of Montreal, Ltd., Montreal 
BAUSCH&LOMB 
BINOCULARS 
Every out-door activity becomes of 
greater interest if you own a good field 
glass to extend your vision, bringing into 
apparent proximity objects that other- 
wise would be barely visible. 
The new Bausch & Lomb Stereo-Prism 
Binoculars— the same type as used by 
the Army and Navy— are unexcelled by 
any ever offered on the market. Due to 
their stereo-prism design they are very 
light and compact, and also give a pro- 
nounced stereoscopic effect. Their optical 
properties and mechanical adjustments 
are of the greatest accuracy and dura- 
bility. 
If your dealer cannot supply you, write 
us for our illustrated, descriptive folder 
with prices. 
Bausch & [omb Optical (5. 
NEW YORK WASHINGTON SAN FRANCISCO 
CHICAGO ROCHESTER, N. Y. London 
Leading American Makers of Photo- 
graphic Lenses, Microscopes, Projection 
Apparatus (Balopticons), Ophthalmic 
Lenses and Instruments, Photomicro- 
graphic Apparatus, Range Finders and 
Gun Sights for Army and Navy, Search- 
light Reflectors, Stereo-Prism Binoculars, 
Magnifiers and Other High Grade Optical 
Products. 
