o 
106 M. C. Lea on Numerical Relations existing _ 
of lithium be added to that of potassium, or if that of sodium 
be doubled, roachiug 
a number is obtained in either case app. 
nearly to 
2. The equivalent of strontium is nearl 
those of calcium an barium : 
68°6 and Ca 20 is 44:3; in 
from that of iodine gives 
With respect to three of ~ ele already considered, a fur 
ther relation exists. For 
tion have been arranged in the following table: 
either case 44 nearly. 
3. The equivalent of chlorine, 35:5, subtracted from that o 
bromine, 80, gives 44°5. The equivalent of bromine subtracted 
47. 
er c 
(8.) 
ter clearness the groups in qué 
a mean betweel | 
Sr=48°75, half the sum of Ba 
Differ- 
ences, 
44 
44 - 
44 « 
Group A. 
100 Hg=100 
56 Cd= 56 
i ee igs 18 
If to the 
Group C. 
92 = 
a | W= 92 
| —32 m= 826 
48 Mo= 48 
add successively to each 
shall obtain four correspon 
Mercury 100 Cadmium 56 
Fluorine 
_19 Fluo 
Group B. 
shen 
ences. 608 Bi —208 
“) 164 — | 
44) 120 Sb =1208 
44- 31 = $l 
“Sf -1088_Po=iiee 
equivalent of the substances forming series A, we 
term the pi poke of fluorine, ¥ 
ding terms of series B. 
rine 19 
5 
Antimony sah Arsenic 75 
Further 
the equivalent of 
nes C. 
Cadmium 56 
Chlorine 35°5 
915 
Tungsten 92 
Magnesium 12 
= SSt 
Zine 
Fluorine le Fluorine 18 eS 
Phosphorus re Nitrogen 14 
r: If to two corresponding terms of series A We, 
Magnesium 12 
Chlorine 
495 
Molybdenum 48 
chlorine, we shall obtain the two terms of : 
ba 
