Xll CONTENTS. 



Chapter XII. continued. 



SECT. PACK. 



140. Equilibrium of Five Forces, . . . : ' . . .'< . 151 



141. Problem, . .152 



142. Impulsive Screws and Instantaneous Screws, . . . . ib. 



143. Principal Screws of Inertia, * *53 



144. Application of Euler's Theorem, . * . . . > . 154 



145. General Remarks, . . . . 155 



146. The Screw Complex of the (n - i) th Order and Second Degree, . 156 



147. Polar Screws, .^ .157 



148. Kinetic Complex, . . . . < . . . . . 158 



149. The Potential Complex, . . . . . . . . 160 



150. Harmonic Screws, . . . . * ' ; . . . . ib. 



CHAPTER XIII. 



THE DYNAMICS OF A RIGID BODY WHICH HAS FREEDOM OF THE 

 FIFTH ORDER. 



151. Screw Reciprocal to Five Screws, . ' . . . . ^ . ... . 161 



152. Definition of the Sexiant, . '. ' . '. '., -\ . . .. *' ./ . 163 



153. Equilibrium, . ... . : . , . . =V . ./ ' . 164 



154. Impulsive Screws and Instantaneous Screws, . .. . . . 166 



155. Analytical Investigation, . , iir ' . r x ^7 



156. Principal Screws of Inertia, .. ..^ .. -' -: . ' . . 168 



CHAPTER XIV. 



THE DYNAMICS OF A RIGID BODY WHICH HAS FREEDOM OF THE 

 SIXTH ORDER. 



157. Introduction, . ; . i/o 



158. Impulsive Screws, .....'.., . ib. 



159. Theorem, 173 



160. Theorem, . ib. 



161. Principal Axis, ib. 



162. Harmonic Screws, 174 



