SPECIFIC GRAVITY OF AQUEOUS SOLUTIONS.—ARCHIBALD, 341 
TABLE II1.—Spectric GRAVITY (at 18°C, referred to water at 18°C). 
| : 
Concen- |Observed) Calculated | Differ- |} Concen- |Observed Galbulated| Differ- 
tration. | Value. | Valne. ences. tration. | Value. Value. | ences. 
4 KgSO4.—(k=0.05831 ; 1=0.07728). } NagSO4.—(k=0.05429 ; 1=0.07207). 
.0500 | 1.00360} 1.00363 |+0.0,3 |} .01980 | 1.00135 | 1.00186 |+ 0.0 yal 
.0666 | 1.00481 | 1.00480 | — 1 .03258 | 1.00225 | 1.00222 |— 3 
.0750 | 1.00535 | 1.00539 | + 4 .04809 | 1.003828 | 1.00825 |— 3 
.1000 | 1.00718) 1.00715 |- 3 || .06312 | 1.00423 | 1.00425 |+ 2 
.2222 | 1.01566 | 1.01564 !— 2 || .09181 ! 1.00609} 1.00612 !+ 3 
.3333 | 1.02323 ( 1.02826 |+ 3 || .1442 | 1.00947] 1.00943 |- 4 
.4000 | 1.02782 | 1.02781 |— it .2525 | 1.01635) 1.01636 |+ 1 
£5000 | 1.03457 | 1.038460 |+ 3 || .38366 | 1.02163} 1.02165 |+ 2 
.6666 | 1.04572 | 1.04584 |+0.0,1 .5050 =| 1.03213 | 1.03214 |+ 1 
.7500 | 1.05130 | 1.05149 |+0.0,2 || .8416 | 1.05263) 1.05276 |+ 0.051 
4 CuSO4.—(k=0.07109 ; 7=0.1072). | x CuSO4.—( Continued.) 
.0500 | 1.00433 | 1.00434 |+0.0,1 .2222 | 1.01829} 1.01833 |+0.0,4 
.0666 | 1.00576 | 1.00574 |- 2 .dd03 | 1.02722) 1.02718 |- 4 
.0750 | 1.00640 | 1.00643 | + 3 4000 | 1.03240 | 1.03245 | + 5. 
.1000 | 1.00855 | 1.00851 | - 4 .5000 | 104016} 1.04029 |+0.0,1 
K Cl.—(k=0.06676 ; 7=0.04556). | NaCl.—(k=0.03109 ; 2=0.04445). 
.0500 | 1.00245 | 1.00241 |- 0.0,4 .0500 | 1.00211 | 1.00213 |+0.0,2 
.0600 | 1.00289 | 1.00290 | + 1 .0600 | 1.00254 | 1.00256 |+ 2 
£0750 | 1.00368 | 1.00364 | — t .0750 | 1.00320) 1.00319 |- 1 
.0800 | 1.00590 | 1.00888 | — 2 .0800 | 1.00344 | 1.00340 | - 4 
.1000 | 1.00482 | 1.00486 |+ 4 -1000 | 1.00420 | 1.00421 |+ 1 
.2000 | 1.00956 ; 1.00958 |+ 2 .2000 | 1.00836 | 1.00837 |+ 1 
.2500 | 1.01233 | 1.01231 |- 2 .2500 | 1.01041 | 1.010389 | - 2 
.4000 | 1.01970} 1.01985 |+0.0,2 4000 | 1.01645} 1.01648 | + 3 
5000 | 1.02401 | 1.02512 |+0.0,1 .5000 | 1.02041 | 1.02047 |+ 6 
.6000 | 1.02860 | 1.03013 | + 0.0,2 .6000 | 1.02420} 1.02440 |+0.0,2 
