PHILADELPHIA 
No. 2564 No. 2566 ' No. 2562 
2562. Apparatus for obtaining bacteriological and chemical samples 
of water in reservoirs, etc. , at different depths, as made by 
us for Dr. A. C. Abbott, Philadelphia Board of Health, etc. 
Also for Baltimore Board of Health, etc $10 00 
2564. The Stengfel Lentz Microscope Lamp.— Constructed for Dr. 
Alfred Stengel, Pepper Clinical Laboratory, Philadelphia. No 
adjusting or tilting required. Gives an intense light suited lor 
bacteriological work, easily modified for urinary and other 
clinical work. Ground and polished lens 2 60 
Revolves so that edge or broadside of flame can be used. 
The light is so intense with this lamp that the user is com- 
pelled to reduce it by means of the iris diaphragm in the substage 
of the microscope, thus utilizing the central and best portion of 
the lens system of his objectives, increasing the penetration, 
definition and flatness of field wonderfully, and making the 
condenser more aplanic. 
2554. Carl Vischer^s Pocket Case, containing four culture tubes, 
Ravenel reversible platinum needle and small non-leakable 
nickel-plated alcohol lamp ; for obtaining cultures for diag- 
nosis, etc 3 go 
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