Page [288]: "rea advantages" was changed to "real advantages".
Page [313]: The quotation mark immediately following 'It begins immediately with' has no closing quote. This structure has been retained.
Page [315]: "children, for ever. 28" was changed to "children, for ever. (28)".
Page [376]: In "bring the scale L to cnt it", "cnt" was changed to "cut".
Page [425]: "council,) the chair" was changed to "council, (the chair".
Page [451]: The large table (originally 7.0 inches wide by 3.8 inches, turned 90°, printed in 9 point type) was divided into two parts, retaining the first column in both parts. The table on page 452 was restructured to three columns instead of six.
Page [455]: For the quotation begun 'Bailey of Boston, says, “I understand', a closing quotation mark has been inserted at the end of the paragraph.
Page [459]: "74° − 32° = 42° .00305 × 42" was changed to "74° − 32° = 42°; .00305 × 42". And "and 30.597 + 052 = 30.649" was changed to "and 30.597 + .052 = 30.649".
Page [463]: In "The effects are produced either with or without access to air", "to" was illegible, and has been inserted.
Page [479]: The larger table ("Crucibles, &c.") has been divided into two tables.