INTEGRAL ATOMIC WEIGHTS.- — DODD. 221 



considered proportional to the loss of material in tlie 

 formation of the atom. 



(&) That the quantity of missing material is a very 

 simple function of the closeness of the comhinatiori: 

 that is to say of the density of the substance. 



(c) That the specific heat of an element depends more 

 upon the number of ultimate sub-atoms in its main 

 atom, than upon the actual weight of the said main 

 or complex atom. 



(d) That with a given number of sub-atoms the melting 

 point is a direct function of the quantity of missing 

 material, so that melting point curve and specific 

 gravity curve are similar so long as the number of 

 sub-atoms (i. e., the Atomic Multiple) remains 

 constant. 



A curve showing the closeness of agreement between- actual 

 specific gravities and those worked out by the above method, 

 is appended (Fig. 3). 



