The West American Scientist. 
= ae 

The 


San + Francisco 


Book -House. 

Publishers, 
}Booksellers, and 

Stationers. 
No. 208 Post Street, San Francisco. 

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OME TREATMENT FOR CONSUMP- 
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Physician and Sugeon, ORRVILLR, OHIO. 
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(Formerly ‘““The Conchologists’ Exchange.’’) 
IMPROVED ! ENLARGED! ILLUSTRATED! 
Issued monthly. Subscription $1.00 per annuni 
H. A. Pi_sBey, Editor, 
WM. D. AVERELL, Manager 
Mt. Airy, Philadelphia, Pa. 
Address 
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ifornia Bird Skins sent for stamp. Charles H. 
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WEST AMERICAN SCIENTIST 
“Decidedly the best of its class.” 
An illustrated monthly magazine of popular science— 
the only one in the West. ’ 
$1.00 a year; 10 cents a copy. 
For shells, fossils, plants, bulbs, ferns, cacti, 
seeds, etc., address the editor, Chas, Russell Orcutt, 

San Diego, California. ° 
The Acme No. 3 Microscope, 
FOR FINEST WORK: 
With 3-5 inch and 1-5 inch objectives, 2 eye- 
pieces power 60 to 7UO), glass slides and 
COVETS,..iN/CaS@..,. cman aeons eee $ 83.00 
With same outfit, but with addition of the 
1-15 oil immersion objective and substage 
condenser (power 50 to 1600) 150.00 
eecee eee ese e 
The Acme 
No. 4 
Microscope, 
As illustrated, a 
thorough instrument 
for professional or 
educational use: 
With 1 in. & 1-5 
in. objectives, 
two eye-pieces 
(power 40 to 
600), glass 
slides and cov- 
ers in case. $55.00 









7 
! 
I} 
The Acme No. 5 Microscope, 
An instrument of simple but thorough construction, 
with yood lenses, and at a minimum cost: 
With 1 inch and 1-5 inch objectives, 1 eye- 
piece (power 40 to 360), in case 
Ave Send for complete catalogue of Microscopes, sam- 
ple copy of the Microscopical Bulletin, and clearance- 
sale list. 
In the Acme Microscopes, we especially pride our- 
selves on the accurate fitting and smooth working of 
the focal adjustments, which are vital points in a 
microscope. Our rack and pinion is unexcelled for 
perfect action. 
JAMES W. QUEEN & CO., 
Manufacturing Opticians, 
924 Chestnut St., Philadelphia, Pa. 
