Measuring the Water of Crystallization oj Salts. f?^3 



specific gravity, therefore tliere qiust have been 6*22 graiiis, 

 l^y measure, decrease of volume. V , i 



There is here inserted a table showing the results of 'most 

 of the experiments on the salts both hydrous and anhydrous, 

 together will) the specific gravities as determined by the above 



m^hod. ,hjj1.,^ jAi ovi^i !li.^ ..luuno- ■^^iiuu.^>l wii 



It may perhaps not be ouf or place to i^ate, that I nave 

 .^refully repeated most of the experiments since this paper 

 >yas first read, and have inserted those which appear to be 

 most accurate ; so that a slight difference will exist in the re- 

 sults as then copied by Dr. Playfair and several other gentle- 

 men, and those of the experiments more recently conducted. 



.UOiJi. 



,')iyirfjs.ofti33( Isomorphous Salts. MC-iti OOi 'li ^i 



Dissolved in 430 grains of water at the temperature of 60° P. 

 '. " , maintained throughout the experiment. 



Increase of volume. Conden- Specific 



Atom. Class. grs. measure. sation. gravity, 



r 26-50] f 2-6751 



lOQ r (Ghrpmate of potash «^ 26-00 ^2625 ll-09<^ 2-680 )■ =2-678 



J ,iii.-d - [26-25 J [2-680 J 



30=7-00 ■) ' jbAiDfidr- li'iJi:!!;- [20-53"] f 2-670 "1 > 



30=7-00 I 88 L Sulphate of potash A 20-53 V 20-85 1203^ 2-680 \ =2-676 



30= 7-33 J [21-50 J [2-680 J 



f 43-00] r2-0751 



-nobnoD xnioa t Nitrate of potash ... -j 42-50 (.42-83 6-35 i. 2073 V =2-074 



I [32-00] ,,...i..rr r2-25o^ 



muaH««v^ .^6 iNitrate of soda \ 3175 Ul-91 6-38 { 2-240 \ =2-246 



Ii9ianeqx9 ^ [32-00 J [2-250 J 



ri9-00] r2-155] 



60 r Chloride of sodium.^ 1950 ^9-33 8-51 <^ 2-156 \ =2-155 

 .0^ J; ll9-50j L2-155J 



,,♦ \ [32-00"] ri-910] 



76 IChlor. of potassium \ 3250 {►32-16 7-464 1945 )> = 1-918 

 [3200 J (_ 1-900 J 



f68-00] f 1-6641 



123 f Sulph. of magnesia.-/ 67-00 U7OO 687 \ 1-665 \ =1-665 

 I: .i,,*i I66O0J [l-666j 



100=45-5] .1;, l,j ,4.7j^, (-6500] ^ ^ ^fV^^^/l 



" '3 LSuIpliate of ; ■ "' ' "' 



b 



100=460 U43 ISuIpliate of zinc ...A 65-78 |>65-26 710-^ 1-970 V = 1-976 

 'Tfl«=45-5j [65-OOj [l-980j ':^ 



4-50] 

 60 rAiihyd. sulph. magn,^ 400 J. 416 62-84 



4-00 J 



2-501 

 SOlAnhyd. sulph. zinc.-! 300 I 2-83 62-43 

 3-00 I 



r43-00] [2-073 



J 42-50 U2-83 6-35-^2075 



[43-00.1 [2-073 



25 = 1000] 1 r49-60] f 2-320] 



102 r Nitrate of potash ... ^ 42-50 }. 42-83 6-35 \ 2-075 V = 2-074 



;i: 



25 = 1 0-00 \ 124 L Chlorate of potash . \ 4960 V 5001 336 \ 2320 \ = 2323 

 25 = 10-25] [50-84] [2-330 J 



