32 ROYAL SOCIETY OF CANADA 
CADMIUM SULPHATE. 


ou Vol. (V) of | Vol. (V’) of 
Density 1 gr. of water in 1 gr. V—V’ 

Grams of Salt |... 
in 100 gr. Gram-Mols. 


of Solution per litre. at 18°. Sol. (c.c.) of Sol. (c.c.) 
10755 *05227 100933 99076 “99059 ‘00017 
‘7175 03475 1:00576 99427 “99418 “00009 
“5409 02615 1:00399 *99602 *99595 ‘00007 
"3631 ‘01752 1:00228 “99773 ‘99773 “00000 
2721 ‘01312 1:00145 “99855 “99865 — "00010 
1812 008730) 100055 99945 “99955 — "00010 
‘1363 *006563 1:00005 99995 1:00000 | — "00005 
| — "0000 
"08932 004299 “99962 1°00038 1°00047 

These results lie very near to what was expected by Dr. Mac- 
Gregor’ from Grotian’s’ ebservations. Here a ‘36 per cent solution is 
the most concentrated solution having a volume less than its con- 
stituent water would have in the free state; and ‘2 per cent is the 
strength of the solution exhibiting the maximum contraction. 
MANGANESE SULPHATE. 










Crib) gr. | | Oram Mols.| Density | {gr of Sol, jwater in gr| VV! 
of Solution. (c.c.) of Sol. (c.c.) 
| 
1°0611 “07152 1°00915 “99093 ‘99074 ‘00019 
8357 ‘05619 1°00685 “99320 ‘99300 ‘00020 
‘7083 04757 1°00566 | "99437 “99428 “00009 
5732 ‘0284 1:00431 99571 “99565 “00008 
2014 "03738 1:00412 | “98590 “99579 ‘00011 
“4198 ‘02811 1°00278 99723 ‘99717 ‘00006 
‘3820 ‘02557 100242 | “99759 “99754 “00005 
3509 ‘02348 1'00214 “99786 “99782 “00004 
2876 ‘01923 1°00151 “99849 “99849 ‘00000 
2817 ‘01884 1°00146 “99854 “99855 — "00001 
* 2500 ‘01672 1:00114 ‘99886 . “99886 ‘00000 
‘2000 ‘01338 1°00065 “99935 ‘99936 — "00001 
‘1155 ‘007712 ‘99982 1°00019 1°00021 — "00002 

1 Loc. cit. 
2 Wied. Ann., 18, 191, 1883. 
