Atomic ySlumedh(tSp€cijfic Gravity i 4oi 



CuO, SO3 + 5HO,^Vbl.'6iPsalt 55-* q'^i.i^'I^.S^i9ii=iintnt 



Kopp found for the specific fjraVity^of this'sali th'^;?iiuiilfl)er ^ 

 2*274 -jrii.;-: , .11!!!.].// UjTin ycljii 



Sulphate of Alumina, AI2O3, 3S03 + 18HO= 333*7..-^^H^"^ 

 salt used in the experiments was carefully prepared, and 

 obtained in tolerably good crystals. The eighth part of an 

 equivalent, ^l*? grains, dissolved in 1000 of water, with ari 

 increase of 20*0 in one experiment, and J 99 in anothefa tHfe . 

 temperature of observation being si^; ''J^^'^) ';oio(rv!-.jniB=.a,nn 



I. Sulphate of alumina, vol, in solution 16Q*0f|> gij] io 



«fj bojj'f,'fMMean*ffjiSJ'i9vit59T6>r!'[' .bo 



The same quantity of salt thrown into turpentine caused 

 in two experiments an increase of 25*0, aii«J in a third of 



-•ii<r. ji{; lo .''.nji'jfn v(? bf)'fi)Vvi){ nad) jii 

 -I. Sulphate Bkmm^^^ki^'^m^/] ii^'^'^^l^f 



' Mean . . 199-6 ... 1-671 



\o 



Sulphate of Soda, NaO, SO3 + lOHO = 161-48.— Sulpholef 

 of soda, crystallized out of a strong warm solution, carries 

 down 10 atoms of water. Of this salt, about one-fourth of an 

 equivalent (40*4 grains), on being dissolved in 1000 grains of 

 water, caused in two experiments an increase of 23*0, at a tem- 

 perature of 59°; and in a third experiment of 22-8 at the 

 same temperature. / daidw jfiriJ ei ^luo'ism odi 



i/][I. NaO,SOs^+ lOHO, vdl^'in^&6Iiitior^^l»g^^^ o"^; 



The same quantity of the salt being immersed in a saturated 

 solution occasioned an increase of 278 ; and on a second ex-, 

 periment, of 27'2 at a temperature of 62°*io lo'aaoqTjjg sdj i6\ 



I. NaO, SO3 + lOHO, vol. ot^ajt 'uf^^^^f^^^ 



-i: ,^o:v'A. j\Mm^-\r,': ••109-9 ... l-469:Jt 



When sulphate of soda crystallizes from a weak cold solu- 

 tion, it carries down a quantity of water, corresponding to 

 eleven equivalents. In two experiments, the volume in solu- 

 tion of salt procured in this way was 98 ; but we apprehend 

 that the water is merely mechanical, ibr reasons which will 

 be seen hereafter, as the volume of the salt itself, by a mean 

 of several experiments, came out to 119*5, whereas had this 



