CATALOOtlE. PHILOSOPHY AND ARTS, MECHANICS. 



139 



Lexell on the motion of connected bodies on 

 a plane. A. Petr. 1781. V.i, njG. 



Ja. Bernoulli on the motion of two irregu- 

 lar bodies connected together. N. A. Pctr. 

 1788. VI. 154. 



Fuss on the motion of a cyhnder saspcnded 

 by a thread wound round it. N. A. Petr. 

 1790. VIII. 256, 



Bodies acting on each other. 



See Laws of Gravity. 



Ealer on the rectilinear motion of three bo- 

 dies. N. C. Petr. XI. 144. 



Pendulous Bodies. 



Bernoulli on the oscillations of a system of 

 bodies. C. Petr. VI. 108. VII. 1G2. XV. 

 97. XVIII. 245. 



Bernoulli on the coexistence of simple vibra- 

 tions. N. C. Petr. XIX. 239. 

 A double pendulum, and the oscillations of two scales. 



Euler on the oscillations of a flexible tliread. 

 C. Petr. VIII. 30. 



Euler on a new kind of oscillations. C Petr, 

 XI. 128. 



Euler on the motion of bodies perfectly flex- 

 ible. C. Petr. XIV. 182. 



Euler on isochronous compound pendulums. 

 N.C. Petr. III. 286. 



Euler on the oscillation of bodies divided or 

 suspended by a thread. N.C. Petr.XVlII. 

 269. 



The flexure of the thread produces no perceptible per- 

 turbation, when its length is greater than three times the 



radius of tlieball. 



Euler on a loaded pendulum. N. C. Petr. 

 XIX. 285. 



Euler on the vibrations of two scales. N. C. 

 Petr. XIX. 302. 



Euler on the equilibrium and motion of flex- 

 ible bodies. N. C. Petr. XX. 286. 



Euler on mixed oscillations-. A. Petr. III. i. 



89. 

 Euler on the oscillations of a suspended 



thread. A. Petr. 1781. V. i. 157. 

 Euler on the pressure of the pivot of a pen- 

 dulum. N. A. Petr. 1788. VI. 1 15. 

 Krafil on a new species of oscillation. C. 



Petr. X. 200. 

 Ou the motion of flexible bodies. A. Berl. 



1745. H.54. 

 Riccati on compound confined motion. C. 



Bon. V. i. O. 150. 

 Fuss on a pendulum of two threads. N. A. 



Petr. 1783. I. 184. 203. 



Vibrations independent of Gravity. 



See Acustics. 



Lagrange on the force of springs. A, Berl. 

 1769. 167. 



A spiral spring may be so fixed as to exert a force nearly 

 constant. Supposing the number of convolutions infinite, 

 the law of its motion approaches to that of a circular pen- 

 dulum. 



Tropagation of Motion in Solids. 



See Acustics. 



The whole of acustics, except the sounds of some kinds 

 of pipes, might be introduced here. 



MEASURE OF FOECE. 



Louville on the force of moving bodies. A. 



P. 1721. H.81. 

 Pemberton on the force of moving bodies, 



against Poleni. Ph. tr. 1722. XXXII. 57. 

 Desaguliers's experiments to show that force 



is proportional to velocity. Ph. tr. 1723. 



XXXII. 269. 285. 

 Eames on the forces of moving bodies. Ph. 



tr. 1726. XXXIV. 188. 

 Clarke on velocity and force. Ph. tr. 1728. 



XXXV. n. 401. p. 381. 



