SCIENCE 



New Series. 



Vol. XXI. No. 533. 



WE HAVE ON HAND THE MOST COMPLETE STOCK OF 



Pure Hammered Platinum Ware 



AT LOWEST MARKET RATES 



CRUCIBLE DISHES for Milk, Water and Sugar Analysis 



SHEET in all thicknesses 

 CONES, Etc. WIRE OF ALL SIZES 

 U. S. Assay Parting Apparatus 

 Retorts and Stills, Etc. 



ONE OF OUR SPECIALTIES IN THIS LINE IS THE 



E. & A. CARBON COMBUSTION CRUCIBLE (Patented), 



so arranged that the entering air or oxygen is superheated and does not blow directly upon the 

 substance to be treated. The gases CO and CO, escaping slowly through a chamber in the top 

 of apparatus which is provided with granulated Copperoxide to effect perfect oxydation, doing 

 away with the cumbersome water-cooling and special CuO=tube. IN THIS CRUCIBLE COM= 

 BUSTIONS ARE MADE IN ABOUT HALF THE TIME WITHOUT ANY LOSS OF MATERIAL 

 AND WITHOUT USE OF RUBBER=JOINTS. It may be provided with stirring arrangement and 

 can be had of straight or conical form to admit a Gooch crucible, saving transferring. Weight 

 about 5U. 



We also stock the FUSED QUARTZ LABORATORY WARE, which is not acted upon by 

 Lead, Arsenic, Antimony, Tin, Phosphoric Acid. 



EIMER & AMEND 



18th STREET and 

 THIRD AVENUE 



New York 



