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



No. 276. 



No. 8042. 



No. 286. 



No.9O. 



No. 294. 



No. 296. 



276. AQUARIUM, iron frame, slate bottom, heavy glass sides; strong and durable. An entirely 

 satisfactory and serviceable aquarium. Dimensions over all: 26% inches long, 17 inches 

 wide, and 15 inches high. Capacity, 20 gallons $19.80 



278. AQUARIUM, same as No. 276, but provided with inlet nipple with lock nuts, and outlet 

 fitting with double standpipe. The construction of this standpipe prevents clogging of the 

 outlet and consequent overflow 27.80 



280. AQUARIUM, same as No. 276, but with plate glass sides, and with over all dimensions: 39 inches 

 long, 19 inches wide, and 21 inches high. Capacity, 50 gallons 47.60 



282. AQUARIUM, same as No. 280, but with inlet nipple and outlet with double standpipe, as de 



scribed under No. 278 55.60 



8042. AQUARIA, Battery Jars, of clear white glass, with ground rim. 



No A B C D E 



Diameter, mm 100 100 125 150 225 



Height, mm 100 125 175 200 300 



Each 55 .70 1.05 1.25 3.10 



286. AQUARIA, Round, of white glass, with reenforced rim. 



No A B C D 



Diameter, mm 175 225 250 300 



Height, mm 175 225 250 300 



Approximate capacity, liters 4 8 12 20 



Each 1.65 2.50 3.75 5.35 



290. ARSENIC APPARATUS, Fresenlus, consisting of a 500 cc Florence flask with two-hole stopper, 

 connected by a glass tube to a 100 cc Erlenmeyer flask with rubber stopper and outlet tube. 



Without support 1.70 



294. ARSENIC APPARATUS, Gutzeit-Bragg, with ground joints 2.00 



296. ARSENIC APPARATUS, Marsh, with glass stopcock, on polished wooden support 2.50 



297. ARSENIC APPARATUS, glass parts only of No. 296 1.75 



300. ARSENIC PLATE (Streak Plate) , of unglazed porcelain for arsenic tests, 60x100x4 mm thick .40 



