m & 
eo) - 
j i 
= ¥ : # 
# 
350 ~ M. C. Lea on Numerical Relations existing 
bers with their decimals with perfect exactness. The same te ; 
cies of relation exists between many other elements, as will be — 
seen by the table below :— 
CE: 
Oxygen-Nitrogen Ratio, or that of Four to Seven. 
: Atomic wts. Atomic wts 
calculated. ive, 
Nitrogen = 14, 4#of 14 = Oxygen ‘8 
Barium °656,2:.- “ 686 = 89-2 Potassium =392 
Potasenitc 808, = § “39-2: 294 Zirconium =224 
alcium => 30, , aber ieee gee oe agnesium =12 — 
Magnesium = 12, 2% 19) ae O86 Glucinum ="* 
Strontium .. 48:75, ©} “. 43-75= 25 Titanium =25 
Lead am L035, .-# “.108°5.=> .59:16 Tin =i) 
Antimony =120°3, 4“ 1203 = 68°76 Vanadium =68°6 
Bismuth = 268, +“ 208 = 11884 Antimony =12 
Mercury =e 100, 4“100 = 5716 Cadmium =56 
4 *~ 57-16 32°66 inc 82 
Molybdenum — 48, "45. = ' 27°42 Chromium =2670 
Chlorine =o, #. apo. 20°98 Silicon =2l 
Fluorine ake + *- 19° *— 10°86 oron =109t 
Boron =108- $ * 109 — + 6-23 Carbon =6 
proximation. « 
The last three equations in the table show us that the atomie 
weight of silicon stands nearly in the same numerical ig. . 
that of boron, as that of chlorine does to that of fluorine ge 
that both these ratios, especially the latter, approach ni Be: 
that existing between the atomic weight of boron and oases 
Now as the atomic weight of boron is by no means pan oy 
determined, it may be allowable to examine how far an Lai 
thetical number will fulfill these several ratios. Let us assume 
, Fluorine : Chlorine : : Carbon : Boron 
we find :— 
Chlorine 35:5 & Carbon 6 —11-2104, 
Fluorine 19 ae A ber 
and obtain for the hypothetical equivalent of boron the numve" 
11:21 (neglecting the fast decimal figures). 1) fulfill the 
t us now examine how far the number 11°21 will fal" aes 
Second proposed ratio, viz. 
Carbon : Boron : : Boron : Silicon 
* Taking Glucina as Ga03. + See Jahresbericht, 1858. 
