FEB 18 1905 



SCIENCE 



New Series. 



Vol. XXI. N 



, Qrl T,ri FrTDAY FfrtjttARV 17 ^Qf)^ Single copies, is Cts. 



^o^529_n^\o5^ JKIUAY, r^JjKUAKY l^^^^^UO^^ Annual Subscription, S5, 



00. 



We have on hand 

 the most complete stock of 



Pure Hammered PLATINUM Ware 



AT LOWEST MARKET RATES 



CRUCIBLES, DISHES for Milk, Water and Sugar Analysis 

 CONES, Etc. SHEET in all thicknesses 

 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 COj escaping slowly through a chamber in the top of apparatus which is pro 

 vided with granulated Copperoxide to effect perfect oxydation, doing away with the cumbersome water-cool- 

 ing and special CuO-tube. In this crucib'e combustions 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 50. 



We also stock the Fused Quartz labora'ory ware, which is not acted upon by Lead, Arsenic, Antimony, 

 Tin, Phosphoric Acid. 



EIMER & AMEND 'r'^l^^ New York 



