

BAIRD &TXTLOCK (LONDON) LTD. 



i 



4687 



4688 



4689 



4690 



4687 Winkler's Gas Absorption Tube. 



A. Small, spirals about 3 in. diameter, f in. tube 



B. Medium ,, 4 in. f in. 



C. Large ,, 6 in. in. 



4688 Winkler's Gas Absorption Apparatus 



4689 T Reiset's Apparatus for the determination of carbon dioxide in atmosphere, with three 

 perforated silver cones, diameter of tube 25 millimetres, height of tube 50 centimetres, 

 capacity of bottle 350 cubic centimetres 



4690 De Koninck's Modification of Mitscherlich's absorption apparatus 





 

 



2 

 I 

 5 





 I 



6 



070 



1 15 

 4 







6 



^Z! "3* 



' if 



4691 Apparatus for the determination 

 of tar in unwashed gases 



176 



4691 



CHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS- 



R49 



