Which pveting, increasin; 
= le has inve 
Chemistry and Physics. 259 
atoms as probably existing ina free state in the extreme outer 
as follows: There are ) 1 
tion for equal material points in one plane, é. ¢., as angle-points of 
@uestions, no answer to which is o 
fills up the plane and the intermediate spaces formed by the super- 
ey of the planes? But admitting that these questions in 
that the ato: 
oms in 
it Z 
> So that mn must be the atomic weight of the element. 
= 160, the number 156 = 12 surfaces each with 13 nd 
>See the atomic weigh arsenic 150 th hes : 
bitra qratces each with 19 pan-atoms, &c., and consequently of ar 
or £; . ie 
nted for the benefit of his hypothesis, the com: 
_ "Rg weights of the elements fixed by the most precise scientific 
