Excerpt from Technical Methods of Chemical Analysis, Vol. 1: Edited by George Lunge in Collaboration With E. Adam, English Translation From the Latest German Adapted to English Conditions of Manufacture
Since the publication of Volume I., the preparation of a new German edition has been undertaken by Professor Lunge and Dr E. Berl, of which the two first volumes were published in 1910, and the third volume in 1911.
The sections comprised in this second volume of the English edition are included in the second and third volumes of the new German edition, which is being issued in four volumes. Advance proofs of these sections have been placed at the disposal of the Editor, so that the subject matter has been brought thoroughly up to date; this has been effected by including, in association with the additions made by the respective revisers of the English translation, all such additions as are applicable to English conditions of work that have been made in the new German edition.
The section on "Organic Dyes," from Volume IV. of the German edition, has been included in this volume, as it forms a suitable sequel to the section on "Coal Tar."
With the exception of those cases in which empirical factors are employed in technical work, all the numerical data are calculated from the table of atomic weights for 1911, issued by the International Committee, with 0 = 16 as the basis. As in Volume I., the numerical data for gases, and for the weights of substances to be taken for analysis, so as to correspond to definite volumes of gases, are calculated from the real litre weights according to the most reliable determinations, not from the calculated values. Also, all temperatures are given in Centigrade degrees, except where otherwise stated.
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