« a 

 0.(v 



esai 



9881 



Atomic Volume and Specific Gravity. 467 



On throwing 35*8 grains of the salt into turpentine, the in- 

 crease was 24'-7, 24*5, 24*6, and 24*8 in consecutive experi- 

 ments with different specimens. 



, 1 i SP' S""' 



t. Carbonate of soda, vol. of salt 98-8 ... 1-451 



•^ il, 98-0 ... 1-463 



Bll 98-4 ... 1-457 



/ty/ ^''""" "99-2 ... 1-446 



Mean . . 98-6 ... 1-454 



Rhombic Phosphate of Soda, 2 NaO HO, PO5 + 24110 

 = 359*1. — The eighth part of an equivalent of this salt, 44*9 

 grains, dissolved in 1000 grains of water with an increase of 

 27-0 in one experiment, and 27*1 in a second; by some mis- ' 



^ :i j take the temperature of the solution has not been recorded. 



I. Phosphate of soda, vol. in solution 216*0 

 II. ... ... ... 216'8 ^«*^ 



<i " '/ <\ I: Mean . . 216-4 



*l^e Same quantity of salt thrown into turpentine caused aff" " 

 terease of 29-4 in two experiments, and 29-5 in a third. '« 'laB*o1 

 S^-i|«'Jli| . Sp.gr. iiinomniA 



jyp , -1, : Phosphate of soda, vol, of salt 235*2 ... 1*527 / 



I II, \,^\ 235-2 ... 1-527 ^^^•"o-'rf^ 



sn-rman, •• ''-^^^ 236*0 .,. 1-521 mulRmii 



988-rsi.8 i^Kf i \: Mean ••, (miim255'5 , ,.. 1-525 i?orfqoT^q 



i — Sub-phosphate of Soda, 3 NaO, PO5 + 24HO = 381*6. ^"^^'' 



The eighth part of an equivalent of this salt, 47' 7 grains, dis- 

 solved in 1000 grains of water, with an increase of 27*1 in 

 two experiments at 48°. - I>iiu<< 



I. II. Sub-phosphate of soda, vol. in solution 216'8 ■^^•' 



The same quantity of salt thrown into turpentine produced 

 an increase of 29*4 in two experiments under favourable 

 circumstances, although in another experiment, in which we 

 were not satisfied with the state of hydration of the salt, the 

 increase was only 28*9. 1 ,, , •,' 



Sub-phosphate of soda 235*2 ... 1-628! (>.!.f.n.. 

 ''■ Arseniate of Soda, 2NaO, HO, AsOg -t-24HO = 402-9.— 

 On dissolving 50*36 grains, the eighth part of an equivalent, 

 in 1000 grains of water, an increase of 27*2 was obtained at 

 a temperature of 54°. iXa Ijiiu:/^^ 



Arseniate of soda, vol. in solution 217'6'^ 

 The same quantity of salt thrown into a saturated solution 

 caused an increase of 29-0 in several experiments. This salt 



