. Proceedings of the Twenty-Fourth Annual Convention of the Association of Official Agricultural Chemists held at the Jamestown Exposition, Norfolk, Va., October 9-11, 1907. Alumina cream and sodium hydrosul-phite: C. A. Browne. W^ashington, D. C A. H. Bryan. Washington, D. C A. Given. Washington. D. C J. E. Halligan. Louisiana W. P. Naquin. Louisiana M. H. Wiley, Washington, D. C Fritz Zerban, Louisiana ° Results of W. D. Home omitted from average ; the sugar was not analyzed immedi-ately on its arrival and had evidently deteriorated through fermentation.^ Too dark to re
. Proceedings of the Twenty-Fourth Annual Convention of the Association of Official Agricultural Chemists held at the Jamestown Exposition, Norfolk, Va., October 9-11, 1907. Alumina cream and sodium hydrosul-phite: C. A. Browne. W^ashington, D. C A. H. Bryan. Washington, D. C A. Given. Washington. D. C J. E. Halligan. Louisiana W. P. Naquin. Louisiana M. H. Wiley, Washington, D. C Fritz Zerban, Louisiana ° Results of W. D. Home omitted from average ; the sugar was not analyzed immedi-ately on its arrival and had evidently deteriorated through fermentation.^ Too dark to ;^ Precipitation of sulphur prevented readings. As regards direct polarization, the results of the different chemists, consider-ing the variations of temperature, etc., under which the work was performed,show a fairly uniform agreement with each method of clarification. The per-centages of sucrose by the Clerget method, however, show extremely widevariations. These are due, no doubt, partly to differences in the method of in-version and also to variation in dilution of the inverted solution, which wasalways darker. There is probably no determination where the element of per-sonal error or equation is more evident than in the Clerget method for fact and the numerous inherent errors in the method has led Koydl o, ina recent article, to recommend the complete abandonment of the Clergetprocess in
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