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Cavendish experiment, in which le ; 

 known mass is measured by moan of 

 compared with the attraction of ' 

 experiment, in whicli a plumb lino usi 

 known mass, and the dellection of 

 fully measured. But both ex])criij 

 tion that all matter attracts, and y 



This review of tlie Newtonian 

 to the authors' own theory, wliich 

 four primary principles deduced iij 

 resistance, reciprocity, and etjuti 

 theory is that two bodies in differ 

 to move will move toward each 

 being proj)ortional to the dififerei 

 the same state that is, in equ 

 one another, and there will be n 

 them. This is a direct contrad 

 that gravitation is universal, 

 increased by boat, light, ele< 

 quentl)' the attraction, weigl 

 change in the jdiysical con 

 shown by experiment, but wi 

 of gravity firmly fixed in the 

 have always been explained 

 new view, terrestrial gravit 

 states of excitation which \ 

 on the inside, and notably 

 Heating a body on the su^ 

 this difference, to reduce t 

 and such is actual b 

 laboratory knows 

 milligrammes h 

 formerly attril 

 planation 1 

 have recen 

 the exist 

 still ol 



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