SCIENCE 



New Sbbiss 



Vol. LUr, No. 1378 



Feiday, May 27, 1921 



c5 5PIES, 15 CT3. 



% P lUBSCRIPTION, 



POLARISCOKI^S 



In Stock for Immediate Shipment as follows: 



No. 5440 S Half-shadow, single wedge, for tubes up to 200 mm. Price $300 



No. 5444 S Similar to above, but for tubes up to 400 mm. Price $350 



No. 5470 S Half-shadow, with Laurent polarizer, regularly used for urinary 



analysis. Price $110 

 No. 5472 S Half-shadow, for tubes up to 220 mm. Price $350 

 No, 5474 S Similar to No. 5472, but for tubes up to 400 mm. Price $380 

 No. 5480 S See Cut. Hastriple field polarizer, reads up to 1/100 degree, has 

 heating apparatus, table plate, etc. For tubes up to 220 mm. Price 

 $600 

 Besides above Polariscopes, we have in stock Polariscope Tubes of all 

 kinds. Abbe Refractometers, Du Bosc Colorimeters, also a great variety of 

 Microscopes and Microscope Accessories. 



Write for additional information, giving details of your requirements. 



THEnd 



NEW YORK CITY 

 3r4 Atc. I8th— I9tli St. 



PITTSBURGH BRANCH 

 2011 Jcokini Ana^ 



