BAIRD &TATLOCK: (LONDON) LTD. 



-rO 



3813 



3812 



3814 



3812 Mercury Distillation Apparatus, mounted on board for fixing to wall, with ring, burner, 



and asbestos lined iron hood for covering bulb 2 15 



3813 Apparatus to purify mercury by dropping through nitric acid, complete with stand and 



clamp 



3814 Apparatus for the distillation of mercury in a vacuum, by Prof. W. R. Dunstan and T. S. 



Dymond, complete with stand, burner, clamps, etc. . . . . . . 1 17 



(See Philosophical Magazine, April, 1890, p. 367.) 



CROSS STREET HATTQTST GARDEN, E'C- 



722 



