Original spelling and grammar are generally retained, with some exceptions noted below. Original page numbers look like this: {36}. Scanned page images of the original book are available from archive.org, search for henleystwentieth00hiscrich. Illustrations have been moved from within paragraphs to nearby locations between paragraphs. The transcriber produced the cover image and hereby places it in the public domain. Large curly brackets “{}” intended to combine information over more than one line of text have been removed, replaced by appropriate text to retain the original meaning.

Return to page 9.

Page 25. The phrase “add the flower” was changed to “add the flour”.

Page 27. Changed egg, in “Have the broken egg very clean” to edge.

Page 47. There’re probably a word or two missing from the phrase “Thus, in melting lead and tin together for solder, rosin or tallow is thrown upon the surface is rubbed with sal ammoniac”, which has been retained as printed.

Page 48. There may be an error in the phrase “alloys containing aluminum, magnetism, chromium”, retained as printed.

Page 81. Changed “finally elutriated graphite” to “finely elutriated graphite”.

Page 167. “Chain clay” is retained, though it may be wrong.

Page 349. A paragraph of Caution about hydrochloric acid was originally printed as an ordinary paragraph in the middle of a list of Reagents. Herein, this paragraph has been converted to a footnote, and moved below the list.

Page 409. Removed the extra drachms; from “and Prussian blue, each 5 drachms; drachms;”.

Page 470. Changed acquer to lacquer, in “with a thin spirit or zapon acquer”.

Page 502. There are evidently a word or two missing from the phrase “water, 3 ounces; 4 ounces (avoirdupois);”.

Page 506. The meaning of “allowing to settle forweeks.” is not clear.

Page 529. The scanned image of the first paragraph of page 529 was unclear in a small area. Guesswork was required.

Page 530. The phrase “pense and flat” was changed to “dense and flat”.

Page 619. In the first table on the page, the amount printed for “Rubber” was blank. In this edition, “[]” indicates this.

Page 624. “The crude oil [...] are”, changed to “The crude oil [...] is”.

Page 658. In the phrase "of copper will meet at 1,940°", meet was changed to melt.

Page 700. The phrase “2 parts of tried suet” is retained.

Page 703. The sentence "Three tablespoonfuls weigh ¹?/?₄ pound." is retained. Other similar errors are retained.

Page 748. The phrase “conferring water: resisting powers” was changed to “conferring water resisting powers”

Pages 787–807. The Index as originally printed uses white space indents to combine information on multiple lines. It is sometimes obscure, and possibly inconsistent. Many of the entries indent about 7% of column width per word meant to be repeated. The entry starting with “Wood Gilding” on page 807 is an example of inconsistency: the 14% indent for the sixth line “Stain for” evidently refers back to the first line, so that “Wood Gilding,” is to be understood as repeated, but more often, it seems, the indents refer back to the line immediately preceeding. In this edition, the white space indents have been converted to em dashes, one dash per word to be understood as repeated.

Page 797. The link for Lichen Removers is changed from page 4 to page 209.