24 THE AU DU BON BU Lee 
at almost daily intervals, of the development of the pheasant embryo from 
the first to the 23rd day, when the bird pips the shell. Half of the shell has 
been removed in each case, so that a virtual cross-section is shown. The 
text explains the changes that are discernible in each picture. If you have 
ever wondered how the chick embryo develops from day to day, you will 
find these photographs supply all the answers you need. Bird students will 
find this an excellent guide to the development of other eggs they may find 
in the field. 
Paul H. Lobih, 22W681 Tamarack Drive, Glen Ellyn 
Need New Binoculars? 
Most bird-watchers are prepared for spring, BUT — 
Some I.A.S. members have friends that need good field glasses. 
To them, the Society offers an exceptional binocular deal: 
— GERMAN MADE — 
7 x 35 — Lightweight (171/, oz.) — LIFETIME QUALITY 
Get now at special savings. Write for circular to 
John Helmer, Treasurer, 847 Ridge Avenue, Evanston, Illinois 
I.A.S. Committees 
Members wishing to help the Society in its work should contact the ap- 
propriate chairman of the committee which they are best qualified to aid. 
Finance Committee 
Oliver C. Heywood, Chairman, 306 N. Lincoln St., Hinsdale. 
Conservation Committee 
Raymond Mostek, Chairman, 615 Rochdale Circle, Lombard 
Downstate Extension Committee 
Elton Fawks, Chairman, Box 112, Route # 1, East Moline 
Editorial Committee; Education Committee 
Floyd Swink, Chairman, Box 31, Willow Springs 
Membership Committee 
EK. French Block, Chairman, 1366 N. Dearborn St., Chicago 10 
