A bout 3 years in the past I wrote a piece of writing for Ladenburg s Handworterbuch der Chemie, containing in a concise shape an exhaustive account of the background of the natural Dyestuf Es. this text was once additionally released individually and its solid reception prompted me to supply the current paintings, which i've got established so far as attainable upon the sooner one. the object in query used to be no longer whole in itself, and within the current example sure sections which got here less than different headings within the Handworterbuch were additional. New fabric has additionally been provided in the course of the advances made within the coal-tar color and in our medical wisdom of the structure of dyestuffs over the past 3 years. A achieve, a few topics were handled at a better size than used to be authorised via the a little constrained area of the Handworterbuch for this reason, the subject-matter of the sooner paintings has been submitted to an intensive revision, and the systematic type of dyestuffs into traditional chemical teams tried within the unique ebook has been performed in a extra whole demeanour, as a result of the advances made in our wisdom in their constitution.
(Typographical mistakes above are as a result of OCR software program and do not ensue within the book.)
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