BAIRD &TATLOCK (LONDON) LTD. 



. 



1910 



1910" Arsenic Apparatus, for the estimation of arsenic by electrolysis, standard pattern as used 

 in the Inland Revenue Laboratory. (For description see/ourna/af Chemical Society , August, 

 I903-) 



Price of glass parts, with platinum wire connection of 18 B.W.G. as used at the Govern- 

 ment Laboratory, porous pot, and Bunsen burner 



Platinum electrodes extra, weight of the pair about i oz. troy, present price 218/- 

 per oz. troy. 



(This apparatus requires a current of 8 volts, 5 amperes.) 



1 15 



1911 1913 1914 



1911 Arsenic Apparatus, standard pattern, zinc and acid method, with Bunsen burner 



1915 



090 



1912 Arsenic Tubes of Jena Combustion Glass, standard pattern G., Fig. 1910, for use with 



apparatus Nos. 1910 and 1911 per doz., 1/3 ; per gross 14 6 



1913 Arsenic Tubes, Clark's, with bulb, of Jena combustion glass, per doz., 9d. : per gross 086 



1914 Arsenic Tubes, plain, of Jena combustion glass. 



A. 3 in. by f in. 



B. 2 in. by J in. 



1915 Balloons, gold-beater skin. 



18 



per doz., 8d. ; per gross 070 

 5d. ; 046 



27 32 36 42 48 in. circumference 



1/6 2/- 2/6 3/6 4/6 each. 



iflCHEMICAL AND SCIENTIFIC APPARATUS AND PURE CHEMICALS. 



385 



