BAIRD <ScTATLOCK (LONDON) LTD. 



4309 



4309 Tubes, combustion, hardest glass, bent and drawn ready for use, 16 in., 7d. each : 20 in., lOd. eacl 

 For soda glass and combustion glass-tubing, see Nos. 3105-3116. 



4310 Tubes, with bulb of combustion glass, open both ends for the determination of oxygen in 



copper .. ' each, 2/3 ; per doz. 1 6 



4311 



4312 



4313 



4314 



4311 Tube Connections, with ground joint, length 12 in. 



Diameter inside . . 6 10 



Price . . 8d - 9d - 



7/6 8/6 



15 20 millimetres. 



1/2 1/8 each. 



13/- 19/- per doz 



4312 Tube Connections, length 13 in., with ground joint, capillary, 2 mm. bore, each 2/6 ; per doz. 



4313 Tube Capillary, length 13 in., with ground joint and hooks each 



4314 Tube Connections, length 12 in., with ground joint and cup for mercury seal. 



Diameter . . 6 10 15 20 millimetres. 



Price -. 1/9 2/- 2/3 2/9 each. 



20/- 23/- 26/- 32/- per doz. 



CROSS STREET HATTTST GARDEN, E-C 



804 



