ERRATA AND ADDENDA.
Reading edition
P. 33, line 23, for beat read be at.
P. 66, line 10, after appearance add (sometimes called “twinkling”).
Corrections for mean index of refraction n′: p. 60, line 1, 1.551 to 1.584; p. 62, line 29, 1.766; p. 66, line 3, 1.601; p. 67, line 24, 1.622; p. 71, line 10, 1.633 to 1.674.
Corrections for Indices of Refraction (mean) in Table on p. 142: Corundum 1.766; Tourmaline 1.674; Tourmaline (precious) 1.633; Dolomite 1.622; Scapolite (Meionite) 1.584; Scapolite (Marialite) 1.551; Calcite 1.601.
Corrections for mean indices of refraction in Scheme (insert folder): Scapolite 1.551 to 1.584; Calcite 1.601 and transfer to Dolomite rectangle; Dolomite 1.622; Corundum 1.766; Tourmaline 1.633 to 1.674.
TRANSCRIBER’S NOTES
Page Changed from Changed to
80 occurs as an alternation product of anhydrite. Gypsum is soluble in hydrochloric occurs as an alteration product of anhydrite. Gypsum is soluble in hydrochloric
136 longer the higher the percentage of calcium in the solution longer the higher the percentage of sodium in the solution
Typos fixed; non-standard spelling and dialect retained.
The author used the old chemical symbol (Fl) for Fluorine.
Corrected the Errata with the exception of the last paragraph "Corrections for mean indices of refraction in Scheme (insert folder)" .
Used numbers for footnotes, placing them all at the end of the last chapter.