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Original printed spelling and grammar are generally retained, with a few exceptions noted below. A few missing full stops were supplied silently. The original page numbers are shown like this: {97}. The original pagination is screwy. The Introduction is on pp. xv–xvi, and then the next page is numbered 9. There are no pp. 1–8. Illustrations have been moved from within paragraphs to between. Blank pages, numbered or not, have been removed. Footnotes, all six, have been moved from within paragraphs to between paragraphs. Ditto marks have been removed, with text restructured as necessary to retain the original meaning. Similarly, large curly brackets used to tie together information on more than one line of text have been removed. The original Index employed white space to indicate words or phrases to be regarded as repeated from the text line above. This edition employs instead the Unicode character U2015 HORIZONTAL BAR —, one for each word to be repeated. The cover image was prepared by editing an image of the original cover, and is in the public domain.
Page 36. The left double quotation mark has no mate, but is retained as printed.
Page 73. The phrase “sheet of Bristol paper and are of pressing board” is retained as printed.
Page 84. The second at was removed from “strength of 2° Baumé at at a temperature”.
Page 103. Changed zince to zinc, in “take the zince plate”.
Page 134. Changed “throughly melted” to “thoroughly melted”.
Page 140. Changed “with a a glue roller” to “with a glue roller”.
Page 141. Changed “difcult to handle” to “difficult to handle”.
Page 182, entry Exposure. Changed “timeing” to “timing”. Likewise, on page 184, the entry Timeing was changed to Timing.