100 M.C. Lea on Numerical Relations existing | 
these substances, not only by the analogies of its organic radi- 
term of the same table. 
Differ- Calculated Received 
ences. equivalents. equivalents. 
31 - ~ con 
i ee eee eee ee 
ites... - @azisns 
tm ot 
44 008 Bi =208 
These four elements exhibit strong analogies and are all me 
morphous with each other. . 
If, taking meroury as a coreg point, we subtract the number 
the foll 
44 from each term to find owing one, we shall obtain the 
series— 
Differ- Calculated Received 
ences. equivalents. equivalents. 
- - Hg=100 
ad . 
56 - - Cd= 56 
“ 12 - - Mg= 12 . 
a Wilber ole Zn = 32°6 | 
The salts of the protoxyds of “ihe three last of these mel 
are isomorphous. It may seem forced to place mercury ®™ 
mer ee but its analogies with zine are perhaps as ssl 
— Sere nginwed because the oxyds of both metals 
ci OIC, sad of potting se sie one 
