SIXTEENTH ORDINARY MEETING. 



123 



he found this velocity to be 36,707 feet per second, or 253 feet less 

 than seven miles. He then showed the effect upon a body so pro 

 jected of the rotary motion of the earth, and of the perturbation 

 caused by the sun's attraction, and how these forces combined would 

 give such a body exactly the orbit in which the moon actually 

 moves. Having also indicated how the permanency of the system 

 is ensured, he deduced the conclusion as irresistible that this is how 

 the moon was projected into her present orbit. 



Mr. Livingstone took exception to some of the positions of 

 the paper, and drew special attention to his doctrine that 

 there is no such thing as centrifugal force at all, but that 

 orbital motion is only vibration. 



