UPON THE RESISTANCE OF THE AIR TO BODIES OF DIFFERENT FORMS. 119 RESULTS OF EXPERIMENTS WITH SLOW MOTIONS. 119 RESISTANCE OF THE AIR, AS AFFECTED BY THE WEIGHT OF PROJECTILES. 121 DEVIATIONS OF PROJECTILES FROM SMOOTH-BORED GUNS. 121 1st CAUSE, WINDAGE. 121 2nd CAUSE, ROTATION. 122 CASES BEARING UPON THE FOREGOING THEORY. 122 ILLUSTRATIONS OF ROBINS’ THEORY OF ROTATION. 124 ON ECCENTRIC PROJECTILES. 124 Original Table of Contents Transcriber’s Notes The original language has been retained, including inconsistencies and errors in spelling, hyphenation, capitalisation, etc., except as mentioned below. Depending on the hard- and software used and their settings, not all elements may display as intended. Table of Contents: as present in the source document. The reason for the order of entries is not clear, and some chapters are not listed, nor are the sections. The structure of the text has been determined based on what seemed the most logical interpretation of (the lay-out of) the chapter and section headings in the text. The Extended Table of Contents in the back of the book has been created for this text on the basis of this assumed structure. The text refers to the plates by both Roman and Arabic numbers. This has not been standardised. The numbering of the actual plates has been standardised. Page 29, great inconvenience ... quite preclude: as printed in the source document. Page 29 and 35 (and Errata), sulphite and sulphide: as printed in the source document. Page 30 and 31, calculations: as printed in the source document. Page 44, Slings were used in 1572, at the siege of Sancere by the Huguenots, in order to save their powder: there should be a comma after Sancere, the Huguenots were the besieged party. Page 47, Our forefathers ... public schools: considered to be a section heading. Page 66, both the king’s feed men: other sources mention Peter Bawd and Peter Vancollen / Van Collen as freed men. Page 107, weight of bullet, ·530 grains: as printed in the source document, but unlikely to be correct. Page 114, paragraph on Parabolic theory: even with the corrections mentioned in the errata, some of the reference letters are missing; F, G and H are presumably the ends of the vertical lines through C, D and E respectively. Page 119, strictly empirical formula: should probably have been a plural. Changes made: Sidenotes have been moved to directly before, footnotes have been moved to directly after the paragraph to which they refer. Some minor obvious punctuation and typographical errors have been corrected silently.