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Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve ...

Excerpt from The Influence of Sulphur on the Color of Azo Dyes: Dissertation Submitted to the Board of University Studies of the Johns Hopkins University in Conformity With the Requirements for the Degree of Doctor of PhilosophyThe dyes from thio-aniline, thio-aniline sulfone and the diamine from mustard gas when c6upled with various intermediates are contrasted with those from benzidine. The color? Are given in Table XIV. This series of color...

Excerpt from The Influence of Sulphur on the Color of Azo Dyes: Dissertation Submitted to the Board of University Studies of the Johns Hopkins University in Conformity With the Requirements for the Degree of Doctor of Philosophy The dyes from thio-aniline, thio-aniline sulfone and the diamine from mustard gas when c6upled with various intermediates are contrasted with those from benzidine. The color? Are given in Table XIV. This series of col...