oe 
352 M. C. Lea on Numerical Relations existing 
The same view may be extended to Section 2. Assuming the : 
atomic weight of the substances in the left-hand column succes 
sively as unity, or one hundred, we obtain the following results; 
Making the ee 
equivalent of Nitrogen 100 that of Carbon becomes 42° : 
Fluori “« Oxygen 6 AP hale | 
100 y 
Iron 100 “ “ Magnesium “ 428 
Cerium 100 “ “ Calcium “| 6435 
&e. &e. 
It is therefore clear that the atomic weight of each substance j 
in the left hand column of these several tables bears to that of | 
compared 
For example, arsenic stands to antimony in the same 2 ual 
cal ratio as selenium to tellurium, within an extremely sm 
fraction, so that by multiplying and dividing we have:— 
Tellurium 64 
-= i ea 120°3, 
Selenium 40 ahd ere é 
So in like manner magnesium stands to zirconium in the same 
ratio as fluorine to chlorine :— Saw 
Arsenic 75 
Chlorine 35°5 
Fluorine 19 
So carbon stands to boron in the same ratio as silver to gold:— 
Gold 19 
7 
Carbon 6 Seen TS OE os ee, — 10°90. 
% Silver 108. 109% eae 
Magnesium 12 X —29'49, Zirconium = 22°40, 
We find 120, the recent determinations vary from 119 to i : 
which appears most reliable is 120°3, as adopted by the 
