BAIRD &TATLOCK (LONDON) LTD. 



4340-4341 



4342-4343 



4344 



4345 



Dewar's Vacuum Vessel for liquid air, oxygen, hydrogen, etc., bulb-shaped, with double 

 walls, exhausted. 



Capacity . . . . 250 500 750 1000 2000 5000 c.c. 



4340 Price, unsilvered . . 2/6 3/6 5/6 6/6 14/- - each. 



4341 silvered . . 3/6 4/6 7/6 9/- 16/6 25/- 



Dewar's Vacuum Vessels with double walls, exhausted. 



Length . . 15 20 30 25 40 25 40 30 40 50 cm. 



Diameter inside 2 3 3 4 4 5 5 6 6 6 ,, 



4342 Price, unsilvered 1/9 2/3 3/- 4/3 5/- 6/- 8/- 9/- 10/- 12/- 



4343 silvered . 2/6 3/- 3/9 5/6 6/- 8/- 10/6 12/- 12/6 15/6 



4344 Dewar's Vacuum Vessels, silvered, with two strips free from silvering on each side, to 



observe experiment. Same sizes as No. 4341-4342. Price 1/6 to 5/- extra. 



4345 Viscosity Apparatus, on stand 



each 10 6 



4346 



4347 



4348 



4346 Vapour Density Bulbs, Dumas' 



4349 



each 006 



4347 Watch Glasses, thin clear glass, for covering beakers, etc. 



Diameter i ij 2 2\ 2\ 3 3^ 4 

 Price 6d. 7d. 8d. I/- I/- 1/6 1/9 2/- 



4348 Watch Glasses, with handles. 



Diameter 

 Price 



4i 



4/- 



5 



5/- 



6 



7/6 



6* 

 9/6 



7 

 10/6 



8 in. 

 13/- per doz. 



4349 Watch or Clock Glasses, green glass, for beaker covers, etc. 



Diameter . . 3 3^ 4 4! 5 6 



Price .. 1/9 2/- 2/3 2/4 2/6 2/9 



7 

 4/- 



8 

 51- 



3i in. 

 5d. each. 

 4/6 per doz. 



9 in. 

 6/- per doz. 



CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



