THE GUIDE TO NATURE— ADVERTISEMENTS 
XIII 
What will ike 
negative stow? 
There’s density and definition; detail in 
high lights and shadows; correctness of 
perspective; color value — consider all 
these. For the negative can show only 
what the lens throws upon it. And any 
picture worth taking at all is worth tak- 
ing as well as it can be taken. In other 
words, take it with one of the 
BAUSCH & LOMB 
PHOTOGRAPHIC LENSES 
In poor light — cloudy or rainy outdoors, 
on porches or indoors — good snapshots 
— better than many a time exposure — can 
be made easily through Bausch & Lomb 
Tessar Anastigmats (Ic, f:4.5 or 1 1 b 
f:6.3). And in bright sunlight they stop 
the fastest action blurlessly. 
Ask your dealer to put Tessar 
Anasitigmat on your camera. 
Then you will see how pleasur- 
able photgraphy can be. 
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. 
Color Cards and Descriptive Literature re- 
lating to our Paint, Enamels, Stains, an d V ar- 
nishes will be gladly sent in response to in- 
quiries addressed to our Home Office g 
FULTON AND CLINTON STREETS;,; - 
Brooklyn New York 
Can You Find “Tongues in Trees, 
Books in Running Brooks, 
Sermons in Stones, and GOOD IN 
EVERYTHING?” 
YOU CAN IF YOU READ 
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Birds and a 
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FOR ALL OUTDOORS. 
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Sample Copy on Request 
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THE 
BLUE BIRD MAGAZINE, 
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