The following misprints have been corrected: "appearnces" corrected to "appearances" (page 44) "Faroday's" corrected to "Faraday's" (page 84) "gentleman" corrected to "gentlemen" (page 96) "two" corrected to "too" (page 105) "surise" corrected to "sunrise" (page 111) "acion" corrected to "action" (page 164) "Stanta corrected to "Santa" (page 167) "Augugst" corrected to "August" (page 167) "baloon's" corrected to "balloon's" (page 192) "mannner" corrected to "manner" (page 214) "1198" corrected to "1798" (page 221) "sevententh" corrected to "seventeenth" (page 240) "maner" corrected to "manner" (page 254) "particulary" corrected to "particularly" (page 256) "are are" corrected to "are" (page 288) "iso-theral" corrected to "iso-thermal" (page 299) "the the" corrected to "the" (page 360) "phenonema" corrected to "phenomena" (page 403) "calorifice" corrected to "calorific" (page 409) Other than the corrections listed above, inconsistencies in spelling and hyphenation have been retained from the original. Tables throughout this text version have been adjusted for readability.