SPECIFIC GRAVITY OF AQUEOUS SOLUTIONS.—ARCHIBALD. 343 
TABLE IV.—SurRFAcE TENSION (fother’s Observations). 
CONSTITUENT SOLUTIONS. 3 g 
Tonization =) =e 
Coefficients in S > 
Concentration. Ne the Mixture. 7 E 3 
ae fas 2 
i} K2804./4NagSO4 4 K2804.|sNag8O,4|t KgSO4./sNagSO,| 2 2 & 
o) 'S) a 
2341 .2041 | ..14770 14738 .631 O08 | T.a94| 7.393 | — 0.091 
.8881 .4796 | .14622 14575 .588 540 | 7.416 | 7.413 | - 3 
.3946 7404 | .14616 | .143855 0713 .009 | 7.433 7.432 |— 1 
.8966 | 1.008 .14614 | .14143 .560 A487 | 7.451 | 7.455 | + 4 
.8976 ATT3 | 14613 | 14577 087 .008 | 7.420) 7.417 |= 3 
.60388 4827 | .14422 | .14572 074 .612 | 7.482 | 7.4382 0 
.8131 .9995 | .14229 | .14151 540 450 | 7.470 7.476 |+ 6 
1,244 1.557 13878 | .13742 .008 .389 «| 7.5389 7.549|+ 0.01 
TABLE V.—SPECIFIC GRAVITY. 
Sodiwm and Potassium Sulphate Mixtures. 
Coeenearmunnot | Toutatign Coeficiente | Syecite Gravity of Mixture, 
4 KgSO4. | }NagSOq4. | + KgSOq. | 4 NagSOy4. |Observed| Calculated | Difference. 
Value. Value. 
.02500 .0505 771 .750 1.00256 | 1.00261 | + 0.0,5 
.0500 .0505 .748 sot 1.00854. | 1.00851 - 2 
.1000 .0673 718 .709 1.00577 | 1.00582 | + 5 
.1000 .1010 701 .691 1.00690 | 1.00693 | + 3 
.2500 »2020 .636 593 1.01694 | 1.01698 | + 4 
.2500 .5050 .598 ool 1.02484 | 1.02489 | + 5 
8333 .5050 .092 544 1.02777 | 1.02774 = 3 
4166 - .8050 586 bad 1.0806C | 1.038056 - 4 
A957 .4996 578 523 1.08300 | 1.03305 | + 5 
-5000 .5050 577 522 1.03381 | 1.08837 | ++ 6 
4957 .6658 .570 507 1.03809 | 1.03820 | + 0.0,1 
