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The J.A.S. Binoculars 
By JOHN HELMER 
SEVERAL MEMBERS HAVE asked why we prefer the Hertel & Reuss 7 x 35 
binoculars for birding. Leading manufacturers have featured the 7 x 35 size 
as the best all-purpose binocular. The principal reason is that glasses of 
higher magnification, such as 8X or 9X, must be held very steadily to give 
a clear image; the 7X gives best results under ordinary field conditions. 
Because of limitations of the human eye, the greatest light-gathering ratio 
that can be accommodated in daylight is 1 to 5, the same ratio as the 7 x 35. 
Hence a 7 x 50 glass provides no advantage, except under very unfavorable 
light, as after sunset. The larger objective lens of the 7 x 50 does not provide 
a wider field of view either, as this is a factor of the optical: system and 
can only be provided at higher cost. The 6 x 30, which gives a somewhat 
wider field than the 7 x 35 with equal light-gathering power, would be 
second choice. 
The Hertel & Reuss binoculars are a post-war German creation with 
advanced optical design, weighing only 16% oz. They are high quality in- 
struments, made for first-rate performance and lifetime service. Members 
and friends of the Society can obtain these at a substantial saving. It is 
significant that every pair sold was recommended to the buyer by some 
other J.A.S. member. Write for descriptive circular to the Treasurer, Mr. 
John Helmer, 847 Ridge Avenue, Evanston, Illinois. 
fT fT fT 
New I.A.'S. Members 
WE HAVE BEEN publishing lists of new members in every issue of the 
Bulletin for the past year. During this time, we have added a total of 121 
new names to our membership list. The total of all members paid-up is now 
at a current high of 576. It is with special pleasure that we welcome the 
following newcomers to our membership, many of them joining as a result 
of our Sereen Tours and Annual Meeting. We invite you to take part in 
our future activities — the camp-outs, new Screen Tours, and conservation 
efforts described in other pages. The next-to-last page gives the names of 
Committee Chairmen that would appreciate your help. It’s your Society — 
make the most of it! 
As usual, the asterisk denotes a contributing member: 
Edna Bosley, Chicago Ruth Palmerton, Chicago 
*Elizabeth B. Boyd, Winnetka M. L. Plaut, Chicago 
Van A. Bradley, Lincolnwood Dr. Nina Popoff, Chicago 
Miss Eleanor Dvorak, Chicago Mrs. George Reynolds, Chicago 
*Loren E. Eimen, Oak Park Miss Flora Rogers, Harvey 
George G. Felt, Chicago Mrs. Edith Simerson, Chicago 
Dr. Ralph H. Foster, River Grove *Grace F. Smith, Chicago 
Mrs. Helen M. Goldstein, Chicago Miss Edna M. Stinogel, Chicago 
Helen L. Hays, Chicago *Mrs. Lester W. Stolte, Park Ridge 
Mrs. Kathryn R. Ivie, Sandwich Mrs. Richard Townsend, Watseka 
John J. Maher, Chicago Mrs. Harold Trapp, Lincoln 
*Mrs. Peggy Merritt, Chicago Leroy Tunstall, Wheaton 
Mrs. C. Turner Nearing, Decatur Maurice L. Ward, Clinton, Iowa 
Mabel W. Newby, Chicago R. W. Webster, Minonk 
Mrs. Francis Zinkin, Chicago 
