Spread of Liquids on Solid Bodies. 

 Table {continued). 



335 



Substance. 



Specific 

 gravity. 



Chloride of calcium 



Sulphuric acid 



Sulphate of zinc 



Sulphate of copper -I 



Carbonate of potassium.. < 



Nitric acid - 



Nitrate of potassium ... j 

 Ammonia 



Cane-sugar 



1639 



0556 

 2318 

 3470 

 5197 



8371 



0910 

 2187 

 4168 



0664 

 •1859 



4444 



0110 

 0915 



1398 



? 



1170 

 2359 



Amount of 

 salt. 



S. 





 2201 







8-43 

 4514 

 85-61 

 161-1 

 180-4 







9-28 

 22-59 

 45-88 







6-40 

 19-64 





 72-63 







2-20 

 18-08 





 25-80 

 ? 







37-67 



102-20 



Edge-angle. 

 9. 



7 



15 



6 



4 



4 



4 



5 



6 



4 



9 



15 



20 



4 



10 



12 



7 



14 



4 



5 



6 



5 



6 



0°to 



5 



7 



9 



30 



48 



35 

 37 

 21 



4 



I 

 25 



6 



7 

 26 

 38 

 54 



30 

 31 

 38 

 30 

 59 



6 

 37 



7° 18' 

 24 



8 



I obtained similar results for other solid bodies, as platinum 

 or gold : — 



Table VI. 



Fluid. 



Specific 

 gravity. 



Edge-angle. 



Glass. 



Platinum. 



Gold. 



Water 



1 



11639 



1-4444 



O / 



7 30 

 15 48 

 14 31 



o / 



4 53 



15 17 



8 37 



o / 



8 11 

 7 45 



7 8 



Chloride of calcium 



Carbonate of potassium.. 



According to these researches the edge-angle appears to 

 increase a little with an augmenting concentration of the saline 

 solution, but otherwise to differ only inconsiderably from the 

 edge-angle of pure water. 



8. Besides the direct methods described in the preceding 

 paragraphs, I have also simultaneously determined the edge- 

 angle indirectly against the same solid substances from the 

 form of flat air-bubbles. 



