Triple Pendulums with Mutual Interaction. 



19 



oblique plan one-half of the bridle cords and their con- 

 necting bridges. This plan is needed for reference in 

 ^developing the theory. We have omitted from all these 



Fig-. 2. 

 Side Elevation. 



views the framework supporting the points A A / A", E E' E" 

 and the rails for the sliding board. These are shown in the 

 photograph which appeared as fig. 13, pi. v. Phil. Mag. 

 ser. 6, vol. xxxvi. July 1918. 



02 



