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XIV. 



IN^OTES ON NEWTONIAN CHEMISTRY. Bt REV. SAMUEL 

 HAUGHTON, M.D. 



[Eead November 13, 1893.] 



Note Y. 



Recapitulation of Newtonian Pbinciples (contained in the first 

 FOUE. notes) and Memoeanditm on the Law of Avogadko. 



I PEOPOSE, in this Note, to give a brief summary of the results of 

 the preceding notes, concerning the gaseous compounds of hydrogen 

 with other single elements, and to state the laws of their com- 

 binations in a general form, capable of future development. 



I. — Combination of Monad Elements with Htdeo&en. 



A hydrogen molecule is represented by two hydrogen atoms, re- 

 volving under the influence of their mutual attractions in a circle 

 round their common centre of gravity, according to Newtonian prin- 

 ciples, in accordance with which the attraction of two atoms for each 

 other is expressed by the equation : 



mm! 

 attraction = u, — — , 



Mi 



where m, m' are the masses of the atoms, r their mutual distance, 

 and /x- their specific coefficient of attraction. 



If /x. denote the coefficient of attraction, at unit distance, for unit 

 masses of hydrogen, I the radius of the orbit, a the mass of the 

 hydrogen atom, and w the angular velocity of the orbital motion, 

 then we have 



attraction 



centrifugal force = viHa. 



Equating these, we find 



/xa = 4Pw2, (1) 



