BAIRD &TATLOCK (LONDON) LTD. 



5976 



5978 



5976 Apparatus to burn air in illuminating gas, and to show the principle of Bunsen's burner . . 036 



5977 Stand with clamp, for above . . . . . . . . . . . . extra 070 



Inside the cylinder the oxygen of the air burns in the illuminating gas, at the cover (c) the 



illuminating gas in the oxygen of the air. 



5978 Apparatus for burning one gas in another. Price without stand . . . . . . 10 6 



The gas to be burned is admitted by the glass tube, and burns at the platinum jet, the air or gas in which 



it is burnt enters by the side tube, and the stopcock at top may be used to regulate the combustion. 



59791 Diagram showing classification of the elements, 44 X 68 in., mounted on cloth, varnished, 



with rollers . . . . . . . . . . . . . . . . ..150 



CLASSIFICATION OF THE ELEMENTS. 



The Classification of the Elements is arranged according to the Periodic System, but the Zero Group has been 

 omitted to save space, and thus the Elements Helium, Neon, Argon, Krypton, and Xenon, are placed in Group 

 VIII. in the order of their atomic weights. The sub groups are differentiated by the colours red and black, and 

 the unclassified Elements are placed together in the sequence of their atomic weights. 



CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



