76 PRACTICAL AGRICULTURAL CHEMISTRY [260 



SECTION V 



APPARATUS, CHEMICALS AND REAGENTS 

 List of Bench Apparatus for each Student 



200. A list of the apparatus which should be kept in 

 each bench-locker is given here. The Bunsen burner, with 

 its indiarubber tube, may be left attached to the gas-tap on 

 the bench. All the other apparatus should be locked up 

 in the bench-locker when not in use. 



1 Bunsen burner about 5 \ inches high, with |-inch 

 tube, and means of closing the air-holes. 



1 Rose-top to fit burner. 



1 Piece of black indiarubber tubing, -^ inch internal 

 diameter and 16 inches long, to supply gas to the burner. 



1 Test-tube stand with twelve holes, two of which are at 

 least an inch across. 



1 Test-tube brush. 



1 2 Test-tubes, 5 inches long by f inch diameter. 



2 Boiling-tubes, 6 inches long by 1 inch diameter. 



2 Round glass plates, ground on one side, 3 inches across. 

 2 Berlin porcelain evaporating-dishes with spouts, glazed 

 inside and out, and 3 inches in diameter. 



2 Watch-glasses, 2 inches across. 

 Conical flask, 4 oz. capacity. 



1 Wedgwood mortar, 4 inches across, and pestle with 

 wooden handle. 



1 Iron tripod stand, 7 inches high, with round top 

 4 inches across. 



1 Piece of coarse iron wire gauze, 5 inches square. 



3 Glass funnels, two of them 2J inches across, one 

 2 inches across. 



