Dll. GLADSTONE ON THE REFRACTION-EQUIVALENTS OF THE ELEMENTS. 31 
II. Aqueous Solutions (continued). 
1 
Substance. 
Formula. 
Equiva- 
lents of 
water. 
Specific 
gravity. 
Tempe- 
rature 
Centi- 
grade. 
pA. 
pD. 
pH. 
Refrac- 
tion- 
equiva- 
lent. 
| Magnesium Hyposulphite . . . 
MgS 2 0, 
26 
1 225 
13 
1-3906 
1-3958 
1-4099 
38-52 
Cerium Chloride 
Ce Cl> 
75-68 
1-110 
12-5 
1-3519 
1-3566 
1-3686 
35-08 
1 Didymium ,, 
Di Cl' 
126-23 
1 061 
15 
1-3407 
1-3450 
1-3566 
34-18 
Zinc Chloride 
Zn Cl' 
8-84 
1 519 
12 
1-4271 
1-4331 
1-4502 
30-58 
10-68 
1-447 
9 
1 -4147 
1-4204 
1-4365 
30-81 
” 
13-88 
14-5 
1-3983 
1-4038 
1-4191 
30-74 
+0-054 ZnO 
7-96 
1 563 
12 
1-4338 
1-4402 
1 4578 
3151 
,, Bromide 
Zn Br, 
26 
1 363 
9 
1 -3895 
1-3954 
1-4113 
43 96 
1 Iodide 
Zn I * 
21-44 
1-564 
20 
1-4276 
1-4352 
65-67 
,, Nitrate 
Zn (no,) , . 
26 
1-297 
12-5 
1 -3803 
1-3855 
1-4003 
38-52 
,, Formiate 
Zn (C HO,), 
152-28 
1-037 
22 
1-3357 
1-3401 
1-3510 
34-8 
193-32 
1-032 
22 
1-3352 
1 -3395 
1 -3506 
35-1 
Acetate 
Zn (C H 0 ) 
34 
1-163 
13 
1-3662 
1-3708 
1-3835 
48-80 
,, Cyanide 
Zn (cn).;+i-58 e cn 
141-72 
1 044 
23-5 
1 3366 
1 -3408 
1 3512 
53-4 
,, Sulphate 
Zn S 0 4 
104 
1-082 
12-5 
1-3426 
1-3474 
1-3581 
27 61 
Cadmium Chloride 
Cd Cl, ? 
26 
1-304 
12 
1-3796 
1-3849 
1-3991 
35-32 
,, Bromide 
CdBr, 
26 
1-438 
24 
1-3910 
1-396S 
1-4133 
47-88 
„ Nitrate 
Cd (no,+ 
26 
1-369 
1 9-fJ 
1-3801 
1-3853 
1-3999 
41-38 
„ Sulphate 
CdSO, 
28-56 
1 346 
25 5 
1-3721 
1-3767 
1-3891 
30-34 
Copper Chloride 
Cu Cl , * 
12-166 
1-432 
21 
1-4354 
D 34 30 
20 
1-290 
23 
1-4012 
14 33-78 
40 
1-155 
23 
1-3698 
D 33-82 
60 
1-105 
23 
1-3587 
1-3704 
D 34-32 
„ nitrate 
Cu7n oa .... 
17-96 
1-392 
17 
1-4044 
1-4211 
D 40-64 
,, Sulphate 
CuS O t 
59-78 
1-149 
13 
1-3554 
1 3600 
1-3713 
27-80 
Ferrous Chloride 
Fe Cl 2 ?. . .. 
28-58 
1-195 
24 
1-3707 
1-3815 
1-3949 
32-86 
,, Bromide 
FeBr, . 
36-58 
1-249 
25-5 
1-3758 
1-3812 
1-3959 
46-26 
,, Sulphate 
FeSO', 
37 
1-212 
215 
1-3672 
1-3712 
1-3837 
28-79 
40-8 
1-1S6 
20-5 
1-3630 
1-3671 
1-3792 
29-39 
nickel Chloride 
niCL+0-09 II Cl 
23-22 
1 273 
24 
1-3987 
19 33-26 
,, nitrate 
ni (NO,). . 
26 
1-298 
15 5 
1-3890 
D 3914 
,, Sulphate 
Hi sc/ .1 
30 
1 264 
13-5 
1-3747 
1-3796 
2816 
Cobalt Chloride 
Co Cl,* 
24 
1 254 
15 
1-3889 
1-3945 
1-4086 
3202 
,, nitrate 
Co (HO,), .. 
30 
1-259 
15-5 
1-3767 
1-3818 
1-3957 
38-48 
„ Acetate 
Co (C„ if 0„) 
44 
1-124 
15 
1-3607 
1-3659 
1-3772 
50-18 
38-42 
1-133 
20 
1-3623 
1 3666 
1-3790 
49-94 
„ Sulphate 
Co SO! . . . 
32 
1-238 
1-3704 
1-3748 
1-3867 
29-01 
Manganese Chloride 
Mn Cl* 
26 
1-194 
13 
1-3774 
1-3824 
1-3964 
33-58 
,, Bromide 
Mn Br , 
26 
1-323 
12-5 
1-3899 
1-4117 
47-24 
„ Iodide 
Mill/. 
159-14 
1-090 
20 
1-3463 
1-3510 
1 3642 
6514 
,, nitrate 
Mn (NO,).... 
26 
1-251 
12-5 
1-3757 
1-3807 
1-3952 
40-22 
„ Acetate 
Mn (C„ H , t> ), . 
32 
1-153 
13 
1-3710 
1-3763 
1-3893 
51-34 
„ Hypophosphite . . . 
Mn (P H, 0„), 
54 
M04 
13 
1-3512 
1-3568 
1-3674 
48-10 
Sulphate 
Mn S 0 j 
23-68 
1-297 
21 5 
1-3784 
1-3828 
1-3949 
28-07 
26 
1 277 
15-5 
1 3748 
1 3794 
1-3915 
27-60 
,, Lactate 
124-2 
1-054 
8 
1 3459 
1-3618 
73-8 
Lead nitrate 
Pb (N O ) , . 
50 
1-297 
11 
1-3676 
1-3731 
13876 
53-56 
,, Acetate 
PbfC h/o ) 
64 
1-192 
15 
1 3576 
3 -3625 
1 -3765 
(U*5 2 
Mercuric Chloride 
HgCl, .' 
241-4 
1-049 
23 
1 -3342 
1 3385 
1-3492 
39 8 
274-52 
1044 
14-5 
1-3347 
1 -3389 
1-3499 
42-6 
279-04 
1 043 
18 
1-3341 
1-3383 
1-3492 
40-54 
+0-96 Ha Cl 
25-88 
1 4yl 
11-5 
1-3924 
1-3987 
1*4170 
5,5-34 
{ 
„ +215 Ha Cl, '( 
o-iona,so t J 
57-64 
1-285 
13 
1-3704 
1-3765 
1-3912 
80-14 
,, nitrate 
Fg (H 0,) 2 + 1-14 H HO,... 
25-06 
1-556 
12 
1-3972 
1-4033 
1-4207 
67-60 
,, Cyanide 
Hg(CN)„ 
146 
1071 
1-3342 
1-3495 
33*60 
158-88 
1 067 
18 
1-3349 
1-3390 
1-3703 
34-74 
Palladium Chloride 
Pd CL +M8HC1.. 
28-10 
1-267 
11-5 
1 3962 
Aluminium Chloride 
A1 Cl/+0'182 A1 0 
41-82 
1 • 1 65 
9 
1-3771 
1 -SS'^O 
1 *3958 
45*23 
,, Sulphate 
Al, (SO,), 1 . 
104 
1165 
25 
1-3627 
1-3739 
67-7 
Ferric Chloride 
FeCl, 
13 
1-177 
22 
1-3827 
1-3888 
52*16 
22-44 
1-273 
24-5 
1-4141 
1-4221 
51-27 
,, nitrate 
Fe”(HO,),+2-5HHO, ... 
59-5 
1-212 
24-5 
1 -3760 
1 3814 
103-45 
,, Sulphate 
Fe,(SO/, +1-9 K, SO, ... 
141-6 
1168 
24 
1 -3624 
1 **3073 
1-3814? 
133-5 
Chromium Chloride 
Cr Cl., + 0-56 0+0 
67-64 
1-165 
13 
1-3769 
1-3826? 
71-90 
,, Sulphate 
Cr 2 (S0 4 ) l-4t H’ S O 
I 231 
18 
1-3790 
50-81 
Gold Chloride 
Au CL+0-S68 F Cl “ 
24-33 
1-4S3 
1 1-5 
1-4079 
1-4160 
Rhodium ,, 
Rh Cl 3 +3Ha Cl 
91-97 
1-172 
115 
1-3717 
10*2-48 
Platinum „ 
Pt C1/+0-94 H Cl 
20-30 
1-665 
11 
1-4610 
l 4709 

84*34 
