BAIRD &TATLOCK. (LONDON) LTD. 



4737 



4737 s Dr. Haldane's Apparatus, similar to No. 4736, but smaller and more portable, for general 



air analysis . . . . . . . . . . . . . . . . 3 10 





4738 



4738 s Dr. Haldane's Apparatus, portable pattern for carbon dioxide, carbon monoxide, and 



methane in naked light mines, with rod for screwing to case . . . . . . 300 



For method of working Apparatus Nos. 4736-4738, see Text Book, " Methods of Air 

 ! Analysis," by J. Scott Haldane, M.D., F.R.S. Price 4/6. 



.CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS- 



861 



