3^4 



Table 384. 



CONTACT DIFFERENCE OF 



Solids with. Llanlds and 



Temperature of substances 



Distilled water 



Alum solution : saturated 



at i6°.s C 



Copper sulphate solution : 



sp. gr. 1.087 at i6°.6 C. 

 Copper sulphate solution : 



saturated at 15° C. . . 

 Sea salt solution : sp. gr. 



1. 18 at 20°.5 C. . . . 

 Sal-ammoniac solution : 



saturated at 15°. 5 C. . 

 Zinc sulphate solution : sp. 



gr. 1. 1 25 at i6°.9 C. . . 

 Zinc sulphate solution : 



saturated at I5°.3 C. 

 One part distilled water -f ) 



3 parts saturated zinc / 



sulphate solution . . . ) 

 Strong sulphuric acid in 



distilled water : 



I to 20 by weight . . . 



I to 10 by volume . . . 

 I to 5 by weight .... 



5 to I by weight . . . . 



Concentrated sulphuric acid 



Concentrated nitric acid 

 Mercurous sulphate paste . 

 Distilled water containing 

 trace of sulphuric acid 



.01 

 to 



•17 



.269 



to 

 .100 



•127 

 •103 



.070 



■475 

 ■396 



—•653 



•.605 

 .652 



.171 

 •139 



•285 

 to 



•345 



.246 



-856 

 .059 



•177 

 .225 



••334 

 •364 



—.25 



1. 113 



—.105 



to 



+.156 



—536 



—565 

 —•637 

 -.238 

 —•430 



—•444 

 —.344 



—.241 



* Everett's " Units and Physical Constants: " Table of 



Smithsonian Tabues 



