BAIRD &TATLOCK. (LONDON) LTD. 





2185 



each, 7d. ; per doz. 6 k 

 8d.; 076 



2182 2183 2184 



2182 Chloride of Calcium Tubes, Marchand's form, two bulbs. 



4 by in. . . 



5 by in. .. 



2183 Chloride of Calcium Tube, improved by Fresenius. 



4 by i in . .. .. .. .. .. each, 8d. ; per doz. 076 



5 by 1 in .. 9d.; 086 



2184 Chloride of Calcium Tube, improved . . . . . . each 1 C 



2185 Chloride of Calcium Tube, very light, with long limbs for successive sealings .. each 010 



i 



2186 



2187 



2188 



2189 



2186 Chloride of Calcium U Tubes, with bulbs. 



Length of limb . . . . 4 5 6 8 10 12 in. 



Diameter .. .. .. f f f | ij 



Price .. .. .. 8d. 9d. lid. 1/3 1/6 2/- each. 



7 1- 8/- 10/6 14/- 17 /- 221- per doz. 



2187 Chloride of Calcium Tubes, straight, with corks and small tubes in ends. 



4 by f in. . . . . . . . . . .' . . . . . . per doz. 2 



6 by fin. .. .. .. .. .. .. . . 03 



2188 Calcium Chloride Tube, for combustions, devised by Arthur E. Hill, Esq. 



each, 1/2; per doz. 13 



The tube consists of an inner tube (A) surrounded by a larger tube (B) fused to (A) at (D) and carrying a side 

 tube (E) with the usual form of condensing bulb. To fill the apparatus, fine granular calcium chloride is introduced 

 into both tubes (A) and (B), a little glass wool being previously inserted at the top of each tube. After filling, glass 

 wool is again introduced, and a suitable cork inserted at (G). The cork is then cut off flush with the mouth of the 

 tube and covered with sealing wax. 



The bulk of the water produced in the combustion is condensed in the bulb on the tube (E), the remainder 

 being absorbed in its passage down the tube (B) and up through (A), thereby securing a double scrubbing action 

 by the aid of a comparatively small quantity of calcium chloride A certain amount of space is allowed in the 

 tube (B) immediately above the connection with (E) to permit aqueous vapour to diffuse before coming into contact 

 with the calcium chloride. 



The whole apparatus only weighs from 25 to 30 grammes, and can be very easily emptied and refilled. 



2189 Calcium Chloride Tube stoppered, new form .. .. each, 1/3; per doz. 14 



CROSS STREET HATTCTNT GARDEN, E-C- 



