Atomic Volume and Specific Gravity. 475 



9*0 at a temperature of 59°, and 33 grains dissolved in the same 

 quantity of water occasioned a rise of 8*75 at 44°. 



.19JBW Jl 



360 



' ^r? KO, SO3+ HO, SO3, vol. in solution 



«3aic*:qiv"^ •■ M-v.- -^ - ■ -.-■" / - -..- • ■■ ... sfl-i 



iiodifialo: ' Mean . . 36-05 



-t?H«lfi'an equivalent (68*2 grains) of the salt, previously 

 fused, immersed in a saturated solution, produced a rise in 

 the stem of 27'5 ; and a second experiment with the same 

 quantity, but with salt which had not been fused, of 27*6, the 

 temperature on both occasions being 55^. 



Sp. gr. 



^:. I. KO, SOg + HO, SOa,, Yfllv of salt 55*0 ... ,2-479 

 II. ... ... ; r,. 55-2 ... 2-470 



Mean . . 55*1 ... 2*475 



Sulphate of Ammonia^ NH4 O, SO3 + HO = 75-25. — In 

 three separate experiments, in which 7525 grains of this salt 

 were dissolved in 1000 grains of water, the increase was ex- 

 actl^y 36-0 at 60°. 



I. II. III. NH4O, SO3HO, vol. in solution 36-0 



Half an equivalent (37*6 grains) being immersed in a satu- 

 rated solution at 49°, caused, in two experiments, an increase 



of 21-5. 



Sp. gr. 



I. II. NH4O, SO3 4- HO, vol. of salt 43-0 ... 1-750 



Sulphate of Ammonia and Sulphate of Water, NH4 O, SO3 

 + HO, S03= 1 15-35. — Half an equivalent (577 grains) of 

 this salt, dissolved in 1000 grains of water, gave a rise in the 

 stem of 23-0 at 5^°, in two separate experiments. 



I. II. NH4O, SO3 -f HO, SO3, vol. in solution 460 



The same quantity of salt being placed in its saturated solu- 

 tion, caused an increase of 32-5 in one experiment and of 

 33*0 in a second, the temperature in both cases being 58°. 



Sp. gr. / " 

 ' 1 ^fH4 0, HO,2S03, vol.ofsalt 65-0 ... 1-775 '^«"^' 



II. ... 66-0 ... 1-747 



Mean . . 65-5 ... 1-761 



Sulphate of Soda and Sulphate of Water, NaO, SO3 + HO, 

 SO.3 = 120-64. — The fourth of an equivalent (30-16 grains) 

 dissolved in 1000 grains of water, in the first experiment with 

 an increase of 4*6, in the second of 4-7, both at a tempera- 

 ture of 06°. 



2 I 2 



