Superintendents and Principals of Schools Select the A CHOCOLATE or RARE QUAUTY 
BAUSCH & LOMB 
w BH 2 
ji MICROSCOPE 
for class work in Botany, Zoology 
and Physiology. 

, @ It appeals to teachers as the 
4A, instrument they want because of its . 
“' optical and mechanical excellence. 
@ BH 2 has 7.5x Eyepiece, 16 
mm ({-inch) and 4 mm (4-inch) Sil pea NEVER WILL 
Objectives. Double revolving d 
nosepiece and carrying case with iy HAVE 
lock and key. Magnifications are ms 
ama 65 and 320 diameters. 
Price, $31.50 
ACHOCOLATE ~— ‘= GIGHEST tn 
€ QUALITY, SMOOTR- 
TC UNCISSEDE NESS ano FLAVOR 
E> Our Name on a Photographic Lens, Micro 
WELA\i\ scope, Field Glass, Laboratory Apparatus, 
Engineering or any other Scientific Ine 
strument is our Guarantee. 
Bausch £7 lomb Optical ©. | Baeeeeenaee wae a, 
HUW YORK WASHINGTON CHICAGO SAN FRANCISCO FIVE CENT, 
LONDON ROCHESTER. NLY. . FRANKFORT 


Refracting and Reflecting 
Astronomical Telescopes 
———————————————_>_—_——_. 
Standard and Portable 

Visual and Photographic 
OBJECTIVES 
Computed by our associate 
DR. F. R. MOULTON 
(Chicago University) 
OBSERVATORIES 
Specula, Planes, Eyepieces, etc. 


Photographs and Circulars on request 
a LOHMANN BROS. 
Illustration shows 5-in. with pneumatic clock. GREENVILLE, OHIO 

‘ 330 UU. S. AG 
