506 



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



No. 13990. 



Nos. 13972-78. 



No. 13980. 



No. 13992. 



No. 14006. 



No. 14008. 



No. H010. 



No. 14012. 



No. 14022. 



13972. TROUGH, Pneumatic, of japanned tin with sliding shelf and overflow; students' size, 4 1 /!>x6 1 / xlO 



inches ?-70 



13974. TROUGH, Pneumatic, of heavy japanned tin with sliding shelf and overflow, 6x11x16 inches 1.60 

 13978. TROUGH, Pneumatic, heavy galvanized iron with sliding shelf and overflow, 5x9x12 inches. 1.00 

 13980. SUPPORT, Beehive, for use with Nos. 13972 to 13978, for supporting the inverted receptacle in 



collecting gases; of zinc, 3 inches in diameter .40 



TROWEL, 6 inch cold rolled steel blade, with malleable iron shank firmly riveted on and wood 



.12 



13988. 

 13990. 

 13992. 



handle 

 TROWEL, best quality, with 6 inch blade made of one solid piece of steel, with wood handle. 



Will outwear all others .55 



TROWEL, Transplanting or Collecting, with narrow and deeply curved blade 6 inches long, and 



wood handle. Useful with the collecting case or as a transplanter, dibber, or weed digger .15 

 T SQUARE, see Drawing Instruments. 



14000. 

 14002, 



14006. 

 14008. 

 14010. 

 14012. 



14016. 

 14020. 

 14022. 



TUBES, ALL KINDS 



TUBES, Absorption, see Absorption Tubes. 



TUBE, Air Thermometer, see Air Thermometer Tubes. 



TUBES, Arsenic, see Arsenic Tubes. 



TUBES, Calcium Chloride, see Calcium Chloride Tubes. 



TUBES, Centrifuge, see Centrifuge Accessories. 



TUBES, Color, see Colorimetric Apparatus. 



TUBES, Combustion, see Combustion Tubes. 



TUBES, Connecting, Brass. Approximate length of arms, 1% inches. 



No 



Diameter, outside, inches 



Diameter, inside, approx., inches 



TUBES, T shape 



TUBES, Y shape 



TUBES, Connecting, Glass. 



No 



Diameter, outside, mm 



Diameter, inside, mm 



Approx. length of arms, mm 



TUBES, T shape 



TUBES, U shape 



TUBES, Y shape 



A 



5 



3 



50 



.10 



.10 



.10 



B 



7 



5 



50 

 .12 

 .12 

 .12 



9ie 

 .40 

 .40 



C 



8 



6 



60 

 .20 

 .20 

 .20 



We 

 .60 

 .60 



D 

 10 

 8 



75 

 .25 

 .25 

 .25 



C 



V, 



K 



.70 

 .70 



E 

 12 

 10 

 100 

 .40 

 .40 

 .40 



TUBE, Connecting, Glass, T shape, with two stop-coeks. Diameter outside, 7 mm; inside, 5 mm. 



3.00 



TUBE, Connecting, Lead, Y shape. Diameter outside, 8 mm; inside, 5 mm. Length of arms, 



about 1% inches .30 



TUBE, Connecting, Hard Rubber, Y shape. Diameter outside, 8 mm; inside, 5 mm. Length of 



arms, about 1 inch .15 



TUBE, Connecting, Reducer, Brass, for connecting ~/ 16 inch to % 2 inch tubing. Without threads. 

 .25 



