CENTRAL SCIENTIFIC CO., CHICAGO. U. 8. A. 



No. 342. 



No. 3414. 



No. 346. 



No. 348. 



No. 357. 



342. COVER, of brass, for 400 cc beaker, for use in determining melting point of asphalts by cube 

 method. With openings for thermometer and wire, the former so shaped as to enable the 

 mercury column to be read at the level of the cover. Without thermometer or wires. (Sec 

 Bulletin 314 of the United States Department of Agriculture) $0.80 



3414. CRUCIBLE, Gooch, best American porcelain, of special form with large filtering surface, for 

 determining bitumen soluble in carbon disulphide. Height, 24 mm; width at bottom. 35 mm; 

 width at top, 45 mm; capacity, 30 cc .50 



346. CUPS OR SAMPLE BOXES for asphalt, of tin plate, as recommended by the American So- 

 ciety for Testing Materials. Diameter, about 2% 6 inches; depth, about 1% inches. 

 Per dozen 75 



348. DEHYDRATING APPARATUS for Tars and Creosote Oils, as used in the laboratories of the 

 Barrett Manufacturing Co. and the United States Office of Public Roads, and recently- 

 adopted as standard by the American Society for Testing Materials. Consists of a cvlindrical 

 copper still 15.8 cm high and 9.5 cm in diameter, supported on an iron stand and fitted with 

 a lid provided with clamp and thumb screw. The condenser consists of a copper jacket 38.75 

 cm long with inner glass tube set at an angle of 75. A special combined separatory funnel 

 and burette is furnished, with a capacity of 120 cc with outlet tube graduated in V-, cc divi- 

 sions. Complete as illustrated, with copper still, connecting tube, ring burner of brass, con- 

 denser, separatory funnel, supports and clamps, but without thermometer. (See Journal of In- 

 dustrial and Engineering Chemistry, Vol. Ill, No. 4, for April 1911; also Bulletin 314 of the 

 United States Department of Agriculture) 38.50 



350. THERMOMETER for No. 348, graduated from to 400C. in 1 divisions according to the 



requirements of the American Society for Testing Materials 7.50 



Extra Parts for No. 348 



351. COPPER STILL, with cover, clamp and thumb screw, with tubulature for connecting tube, 



and with 6 paper gaskets. Height inside, 15 cm; diameter inside, 8.7 em 20.00 



2110C. RING BURNER, of brass, for use with No. 351 2.20 



353. CONNECTING TUBE, of glass, with side arm 20 



354. CONDENSER, of copper, on support, without inner tube 10.00 



355. INNER TUBE for No. 354, of glass, about 55 cm long 40 



356. SEPARATORY FUNNEL, with stopcock, capacity 120 cc, with outlet tube graduated in % cc 



divisions 4.00 



357. DISH, Evaporating, for use in evaporation test, of pure nickel, with flange and handle... 1.50 



