Transcriber’s Note
Punctuation, hyphenation, and spelling were made consistent when a predominant preference was found in this book; otherwise they were not changed.
Many abbreviations, and some sentences, did not end with periods. Transcriber added missing periods only at the ends of sentences, and did not attempt to resolve other inconsistencies.
Simple typographical errors were corrected; occasional unpaired quotation marks retained.
Ambiguous hyphens at the ends of lines were retained.
In some letters, the salutations and dates were printed on the same line, and the signatures sometimes were printed on the same lines as the end of the body. In this eBook, the dates always appear above the salutations and the signatures are on their own lines.
The Transcriber did not review the spelling of non-English words.
Second page (unnumbered), last line: “with whom they abide.” The word shown here as “abide” was poorly printed and unclear.
At the bottom of the Title page, the date is “1833”; at the bottom of the cover, the date is “1835”.
Page 66: “piece of plane glass” was printed that way.
Page 66: Transcriber added the comma in “and LR, LR the extreme red”.
Page 70: Transcriber added italics to “makes orange”.
Page 126: “on the 7th January, 1618” should be “1610”.
Page 306 referred to Newton’s telescope being shown in “fig. 1”, but it actually is in “fig. 3” and is referenced that way in this eBook.
Page 321: The opening parenthesis before “viz. one of those that go round another” has no matching closing parenthesis. Transcriber added a closing parenthesis after “round another planet”, but that may not be where it belongs.