166 Nitrate of lead ■{ 26-50 } 26-91 10-73«^ 4-40 



L27-26J l_4-42 J 



r38-34-] ^ZT: ri-53 



54 Muriateof ammonia-^ 39-25 ^38-86 3-34-^ 1-52 

 L3900J . [l-52 



100 = 49-00 1 r63-701 ^Zt^' f 1 -840 ] 



214 Mr. S. Holker on Dr. Dalton's ne>iio Method of 

 Hydrous and Anhydrous Salts* 



Increase of volume. Conden- Specific 

 Atom. Class. prs. measure. sation. (gravity, 



[27 m^ r4-42 1 



J. =4-41 



= 152 



100=5000 U30 Sulphate of iron ..A 6500 164-13 ' 6'10.^ 1-864 ^ = 1-851 

 I00=4900j i^63-70j \\-^5(}] 



100=65-00T r93-60"1 f 1-4601 



100 = 65-00 [-144 Carbonate of soda. J 93-60 U3-12 5-84-^ 1-440 I =1-455 



100=64-OOJ 1^92-16 J [ 1-465 J 



102 grains nitrate of potash dissolved at 150° F. gave an in- 

 crease of 4-5*00 grains by measure. 



60 grains chloride of sodium dissolved at 150° F. gave an 

 increase of 21*50 grains by measure. 



100 = 56 = 123 grains sulphate of magnesia dissolved at 

 150*^ F. gave an increase of 68*88 grains by measure. 



100 = 47=143 grains sulphate of zinc dissolved at 150° F. 

 gave an increase of 67*21 grains by measure. 



54 grains muriate of ammonia dissolved at 150° F. gave an 

 increase of 41*00 grains by measure. 



At 60° Fahrenheit. 



430 grains measure of saturated solution of nitrate of soda 

 diluted with 60 grains of water occasioned a condensation of 

 1*00 grain measure. 



430 grains measure of saturated solution of nitrate of potash 

 diluted with 60 grains of water occasioned a condensation of 

 0*5 grain measure. 



430 grains measure of saturated solution of muriate of am- 

 monia diluted with 60 grains of water occasioned a condensa- 

 tion of 0*25 grain measure. 



430 grains measure of saturated solution of sulphate of 

 magnesia diluted with 60 grains of water occasioned a con- 

 densation of rOO grain measure. 



430 grains measure of saturated solution of sulphate of zinc 

 diluted with 60 grains of water occasioned a condensation of 

 1*00 grain measure. 



I have here repeated the experiments as much as possible 

 in the atomic numbers of the various salts, in order that the 

 results may be affected as little as possible by the influence of 

 water in producing a greater or less expansion or contraction 

 out of the proportion to that occasioned by the other salts. 

 I am perfectly aware that by obtaining data on which allow- 

 ances for the quantity of water might be based, the multiple 



