Journal op Entomology and Zoology — Advertising Section 
The New Home Balopticon 
KiHii|i|]i'(l with a iiitrofjcn-filli'd Mazda lanijp which tfi^'i^s a 
lirilhaiit illuniiiiation ami a clear definition. Is superior to 
aiiythiiifj' yet offered in this tvpe of apparatus. Write for 
■xiolilets. $35.00 for Opaque Projection only : $45.00 with 
Lantern Slide Attachment. 
Bausch & Lomb Optical Co. 
Faciory. Rochesier, N. Y. | 54 Sutter Street, San Francisco 
New No. 65 
Spencer Microscope 
ADVANTAGES 
EXTRA LARGE STAGE, 11:; x lOSmm. 
ARM 75mm FROM OPTICAL AXIS. 
low compact construction. 
black lacquered body tube. 
genuine vulcanite covered stage. 
iris diaphragm operated by a knurled 
ring easy to reach. 
automatically lubricated fine ad- 
justment bearings. 
new type handle arm. 
symmetry of outline. 
beauty of finish. 
superior optics. 
IDEAL FOR LABORATORY WORK 
Send for Revised Price List for 1914 
Spencer Lens Co. 
BUFFALO, N. Y. 
Double nosepiei 
One eyepiei 
Cabinet 
, $31.50 
CLASS WORK MATERIAL 
CAN BE PROCURED AT ANY TIME OF 
THE YEAR FROM 
C. S. BRIMLEY, Zoologist 
1135 Newberne Avenue 
RALEIGH, N. C. U. S. A. 
Twenty-one years' experience 
Price List on Application 
