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BUSHNELL PRISM BINOCULARS. PF atide high faaaiily: tae ee price. 
Clarity of optical systems compares favorably with a cha Amer- 
ican-made or pre-war German. binoculars. | eae 
BUSHNELL BINOCULARS are accurate —. Golde reed. — collimated 
for perfect alignment. Lightweight ‘magnesium body. Prisms and 
lenses coated for inereased brilliance, pole with: aren toe: Genoa 
leather carrying case and straps. 
The Illinois Audubon dere offers: ‘two models, selected particularly 
for bird students: s 
7 power, 35 mm: Field 375. ft. at 1000 yds. ‘Wxit pupil, 
5 mm. Light efficiency, 87, Center focus, Weight 17 0Z.; 
height, 454 indbes nan oie ay. Each $58.50* 
6 power, 30 mm: Field 445 tt. a 1000 yds, Exit pupil, . 
5 mm. Light efficiency, 37. Center: focus. Weight, 1544 0z.: 
. height, 456. tchesei.soc 2.0 secs es Bach $43,50* | 
Bay your binoculars dirough the Bocteey and support its work in 
protecting birds and wildlife. To order, write the Illinois Audubon 
Society, Chicago Museum of Natural ieee cguaighone Road and 
Lake Shore Drive, Chicago 5, Tilinois. | 
, * Plus 0% oie Buciee Tox . . 
Me for Nature Study ae 
FIELD ) GUIDES - TEXTBOOKS - 
on NATURE LITERATURE 
i ILLINOIS aubouow SOCIETY will fill mail eges for almost any — 
book in the field of ornithology, nature study or conservation. Books 
not now at hand can be obtained Aollowing receipt of order. The 
following volumes are in stock; A 
A Guide to Bird Finding, by Olin | 8. ‘Peteonpiil. $5. 005.4 
Field Guide to the Birds, by Roger T. EReSTeOT, ee 50, | 
ai bh 
i Birds’ at ies by Pda Henry. $2, 00. 
Traveling with the Birds, by Rudyerd Boulton. $2.00. 
_ Golden Nature Guide Books. A series of nature guides, pocket 
size, for children and beginners. We have the following 
volumes: Birds; Sue cd Neer 3 Insects; Stars. $1.00 each. 
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