Obvious typographical and punctuation errors have been corrected after careful comparison with other occurrences within the text and consultation of external sources. Except for those changes noted below, inconsistent or archaic spelling of a word or word-pair within the text has been retained. For example: horseshoe horse-shoe; superheated super-heated; intrusted; incased. p iii. 'Friction, p. 35' changed to 'Friction, p. 39'. p iii. 'muscular action, p. 45' changed to '... action, p. 49'. p iv. 'wind-mill' changed to 'windmill'. p iv. 'Ctesibus' changed to 'Ctesibius'. p 93. 'was done is' changed to 'was done in'. p 114 (Illustration caption). 'Trevethick' changed to 'Trevithick'. p 122. 'drlving' changed to 'driving'. p 180 (Illustration caption). 'pull pieces' left unchanged (probably meant to be 'pole pieces'). p 191. 'Horsehoe' changed to 'Horseshoe'. p 264. 'Liége' changed to 'Liège'. p 299. 'repellant' changed to 'repellent'. End of the Project Gutenberg EBook of Every-day Science: Volume VI. The Conquest of Nature, by Henry Smith Williams and Edward Huntington Williams