ear* 



BAIRD &TATLOCK (LONDON) LTD. 



2499 



2500 



2499^ 



Evaporating Bath, copper, 24 by 8 by 5 in., fitted with 3 sets of porcelain rings, 6J in. 

 diameter, 7 rings in set. Price on stand 



2500 s Constant Temperature Drying Oven, designed by R. L. Siau, Esq., made in hard 

 rolled copper with gun-metal door and swing screws to fasten. Size of inside chamber 

 18 by 3 by ii in., with wire gauze tray ior carrying the drying capsule fitting the entire 

 length of chamber. Brazed copper flask connected by screw coupling and nickel-plated 

 ball condenser at top. Complete with stand. Price 



The oven may be heated by water, toluol, or other liquid of fixed boiling point, and the heating spiral, 

 which is coiled between inner and outer jacket, is connected to a water filter pump. A constant stream of 

 heated air is thus drawn through the inner chamber. 



The temperature can be varied according to the liquid used through which the heating coil passes. 



For further description see Journal of Society of Chemical Industry, vol. xxx., page 61. 



256 



4 10 



2501 



2501 s Copper Water Bath, size 19 by 6J- by 4 in., with three openings fitted with nickel iris- 

 diaphragm, 4 in. diameter, closing to | in., on stand 



The above is specially adapted for use with Fat Extraction Apparatus. 



4 10 



CROSS STREET HATTO^T GARDEN, E-C- 



496 



