PIN-LABELS IN MULTIPLES OF 1000, ALIKE 
One Dollar Per Thousand 
Smallest Type. Pure White Ledger Paper. Not over 4 Lines nor 30 Characters 
(13 to a line) Additional Characters, 3 cents each, in total and per line, per 
1000. Trimmed so one cut makes a label. 
G. V. BLACKBURN, 7 Emerson St., STONEHAM 80, MASS. 
The 32 nd biennial edition of The Naturalist’s Directory will 
be published in September. This Directory comprises the names, 
addresses and special subjects of interest of naturalists of all 
parts of North and South America as well as a list of Scientific 
Periodicals and Natural History Museums. The price is $ 2.50 
and published by The Naturalist’s Directory, Salem, Mass. 
CAMBRIDGE ENTOMOLOGICAL CLUB 
A regular meeting of the Club is held on the second Tuesday 
of each month (July, August and September excepted) at 7.45 
p.m. in Room B-455, Biological Laboratories of Harvard Univer- 
sity, Divinity Ave., Cambridge. Entomologists visiting Boston 
are cordially invited to attend. 
78 YEARS OF SERVICE TO ENTOMOLOGY 
Three-quarters of a century devoted to the manufacture and 
design of Entomological Supplies and Equipment assures that 
your requirements can be met by Ward’s. Sterling quality, 
prompt service, and consideration of your needs are fundamental 
with us. Purchase your requirements from America’s foremost 
Entomological supply house. 
A new catalog of Entomological Equipment is ready. Write for 
your copy. 
WARD’S NATURAL SCIENCE 
ESTABLISHMENT, INC. 
P. O. Box 24 Beechwood Station 
Rochester, New York 
