Footnotes

Transcriber's Notes

Some corrections were made to the original text. In particular, punctuation was corrected without further note. Inconsistent spelling and hyphenation was retained unless noted otherwise. There were two Notes 189 in the original; this was retained as printed. Spelling of Index entries was changed to reflect the body text where inconsistencies were found. Index page numbers were corrected where errors were found. Further corrections are noted below:

p. 50 0·005·1449 -> 0·0051449

p. 61 24,000 -> 240,000

p. 62 M. Leverrier -> M. Le Verrier

p. 84 in mean solar day -> in a mean solar day

p. 96 syzigies -> syzygies

p. 115 arrising -> arising

p. 120 Herchel -> Herschel

p. 123 generally know -> generally known

p. 159 Fraunhoffer’s -> Fraunhofer’s

p. 168 contaary -> contrary

p. 214 oxyde -> oxide

p. 216 aperature -> aperture

p. 296 M Niepce -> M. Niepcé

p. 306 torrecelian -> Torricellian

p. 307 potass -> potash

p. 350 de Roux -> le Roux

p. 423 Β -> β

p. 447 areal -> aërial

p. 456 perigree -> perigee

p. 471 108° -> 180°

p. 478 Meissier -> Messier