F. W. Clarke— Volume of Water of Crystallization. 429 
and subsequently present my conclusions. The following spe- 
cific gravity determinations were employed. ws educe 
molecular volume is placed after each one, in bracket 
CaCl,, 2-240, Filhol (molec. vol. 49°6). CaCl, 6 aq., 1° ae Fil- 
hol (vol. 133 9). SrCl,, 28033, Karsten (56°5). SrCl,, 6 aq., 
1921, Buignet (138-8). BaCl,, 3-886, Schroder (53-5). "BaCl,, 
2 aq., 3°052, Schiff (79-9). FeCl,, 2 528, Filhol (50°2). FeCl,, 
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gCl,, 
2°177, Playfair nd Joule (43°7). MgCl,, 6 aq., 1562 , Playfair 
and Joule (1 29°9). 
Li,SO,, 2-210, Kremers (46°6). Li,SO,,aq., 2°02, Troost (59° 9). 
Na,SO,, 2°59 97, Playfair and Joule (54:7). Na,80,, 10 aq., 
9). Ca 
ZnSO, 0, Karsten, Filhol (47°4). Zn 080,. 7 aq., 1:9 
Buignet ee 7). Al 3(SO,),, 2°171, Playfair and Joule abe ri 
Al, (SO,),, 18 aq., 1671 , Playfair a and Joule (39 
CuK, (S0,),, 2°797, Playfair and Joule (119°). ‘CuK,(S0 pre 
6 aq., 2716376, Playfair and Joule ey? K,(S0,)o, 2-816. 
Playfair and Joule et ZnK 2(SO,4)o, 6 aq., 2 3, Schiff, 
2(SO,)., 6 aq., 1°891, Playfai and Joule (211 2), 
ZnAm, SO;)5, 2° or: Playfair and Joule (131°9). Sia 
(SO,)», 6 aq., 1897, Playfair and Joule (211-0). AIEGO). 
; AlK(SO,),, 
Playfair and Joule (276). AlAm(SO,)., 2 039, Playhair an and 
J si (116°4). AlAC(SO,) 12 aq., 1°625, Playfair and Joule 
(27 
Na.B.0, 2-367, Filhol (85°3). Na,B,O,, 10 aq., 1692, Filhol 
8) 
SrN ae 857, Filhol (78°2). SrN,O,, 5 aq., 2-118, Filhol (148°3). 
ne an , 2240, Filhol (78° 5). CaN, O,, 4 aq., 1°90, Ordway 
130 
Naas ; 
Oy tas, CaCO,, 2°7000, porte ten (37°0). CaCO, ae 
1-783, Pelouze (106 6). KN aCO,, 2°5289-2°5633, Stolba (48). 
KNaCo,, 12 aq., 1°6088-1°6334, Stolba (208 6). 
302, 1421, Bédeker (59°3). NaC,H,O,, 6 aq., 140, 
er (137°8) 
