Chemical News and Journal of Industrial Science . n in the lastcolumn of the table. The value of chlorine was taken as35-15S, of bromine 79-920 (F. W. Clarke, loc. cit.). SPECIAL MACHINE FOR QUICKLY AND ACCURATELY COMPUTING THE PERCENTAGES OF MATERIALS COMPRISING A MIXTURE. The absolute necessity of mixtures containing the accurateand desired materials in the requisite percentage of eachingredient cannot be overestimated, and any machinewhich will expedite the operations of weighing must be ofvalue to the manufacturer. The machine illustrated is of the ordinary platform type,and mixtures can b
Chemical News and Journal of Industrial Science . n in the lastcolumn of the table. The value of chlorine was taken as35-15S, of bromine 79-920 (F. W. Clarke, loc. cit.). SPECIAL MACHINE FOR QUICKLY AND ACCURATELY COMPUTING THE PERCENTAGES OF MATERIALS COMPRISING A MIXTURE. The absolute necessity of mixtures containing the accurateand desired materials in the requisite percentage of eachingredient cannot be overestimated, and any machinewhich will expedite the operations of weighing must be ofvalue to the manufacturer. The machine illustrated is of the ordinary platform type,and mixtures can be made up in any desired percentage bysimply balancing the steelyard. The percentages varyaccording to the requirement. The barrow or container is placed on the platform, andis tared by the poise on the larger steelyard. The bucket or whatever it is desired shall contain thesecond mixture is then tared on the smaller steelyard, andthe runner is moved along until it rests on the percentagegraduation which it is desired the second ingredient shall. 0-61103 grm. CI found on anode.+0-00038 grm. CI determined as nephelometer. 0-61141 grm. total chlorine grms. NaCl taken. 1-00793 : 06ii4i = 230o+X : X. X = atomic weight ofchlorine. X = (23-00) (0-61141) = 35-465- Determinations 10, 12, and 24 were carried out in dark-ness as mentioned above. After drying and weighing asusual, the halides on anodes in determinations g, 11, and20 were fused as previously described. No significantchange of weight was observed. In determinations 17, iS,19, and 27 the pure silver disc anode was used. Since the above article was published in separate formas a thesis, Dr. W. A. Noyes has called attention to the bear to the nnknorcn quantityNvhich^Jias been placed othe platform. When the amount placed in the smaller skip balancesthe steelyard, the desired percentage can be added to thebulk without any fear that it does not bear its correct pro-portion, thus avoiding all possib
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