300 



SCIENCE 



[N. S. Vol. XXVII. No. 686 



Extracting Sugar from Dried Beet Cos.- 

 settes: Harry McCormack. Eeported 

 by title. 



Analyses of Grains and their Comparative 

 Value for Feeding Purposes: Joseph S. 

 Chamberlain. Eeported by title. 



Changes taking Place in Whisky stored in 

 Wood: C. A. Crampton and L. M. Tol- 

 MAN. Reported by title. 



Detection of Thickeners in Ice-cream: G. 

 E. Patrick. Reported by title. 



INORGANIC CHEMISTRY SECTION 



A. W. Brown, Chairman 

 Rapid Electroanalysis without Rotating 



Electrodes: Francis C. Frary. 



The apparatus described by the author 

 in the November number of the Journal 

 of the American Chemical Society (p. 

 1592) was shown in operation and its con- 

 struction explained. The object of the ap- 

 paratus is to provide efficient stirring of 

 the electrolyte during the progress of an 

 analysis without the use of an electric motor 

 or mechanical stirring device. The stir- 

 ring effect is produced by the action of a 

 magnetic field upon the solution while the 

 latter is being electrolyzed. Two forms of 

 the apparatus were shown, one for use with 

 a wire gauze cathode and the other for a 

 mercury cathode. Details of the construc- 

 tion of the apparatus may be found in the 

 above-mentioned publication. 



A Gas Volumeter with Talle of Calculated 

 Values for Carbon Dioxide: S. W. Parr. 

 An apparatus combining in one piece the 

 advantages of various forms for evolving 

 and measuring various gases from solids or 

 liquids. The chief feature of the paper is 

 intended to point out the errors existing in 

 values now found in all texts of reference 

 for carbon dioxide varying from 0.3 per 

 cent, to 3.5 per cent, in amount. A cor- 



rected value with calculated table for vari- 

 ous temperatures and pressure is proposed. 



Atomic Weight of Chlorine: Wm. A. 



NoYES and H. C. P. Weber. 



A new determination of the ratio be- 

 tween hydrogen and chlorine has been car- 

 ried out, partly because of the very great 

 importance of the atomic weights of silver 

 and chlorine as a basis for the determina- 

 tion of other atomic weights, and partly 

 because the work could be performed with 

 the use of hydrogen from the same appa- 

 ratus which was used in the recent deter- 

 mination of the atomic weight of H by one 

 of us. The hydrogen was weighed ab- 

 sorbed in palladium. The chlorine was 

 weighed in the form of potassium cliloro- 

 platinate, and the hydrochloric acid was 

 weighed in the first series by absorption in 

 water and in the second series by absorp- 

 tion in water after first condensing it to 

 the solid state by means of liquid air. The 

 ratio found is H :C1 = 1 : 35.184. This, by 

 combination with the recent value for the 

 atomic weight of hydrogen, determined by 

 one of us, gives the atomic weight of chlo- 

 rine as 35.461 and the atomic weight of 

 silver as 107.88. 



An Yttrium Group Separation Method: 

 Benton Dales and H. D. Young. 

 The scheme is to dissolve fractionally the 

 rare earth hydroxides in solutions of am- 

 monium salts of organic acids. One series 

 of fractions obtained by the use of cold 

 saturated anunonium acetate solution with 

 material of atomic weight 108 (mostly 

 yttrium, but containing also nearly all the 

 rest of the members of the group) gave five 

 fractions of atomic weights 128, 124, 109, 

 104, 105. These values are round num- 

 bers obtained by the use of a modification 

 of Herrmann's hydrochloric acid titration 

 method. A first fraction contains prac- 

 tically no rare earths, for some reason un- 

 known at present to the authors. The same 



