Chemical Equilibrium of Solids. 



23 



Table VIII. — Pressure-Coefficient and Insulation of sticky 

 Mineral Machine-oil. p = 150atm. Pressure-coefficient 

 of glass. Oil-insulation at 100°, 4 x 10 9 co. 



Series No. 









Series No. 









0. 



R. 



10 3 X 

 ^R/R. 



Sp. 



£rXl0 e : 



9. 

 R. 



10 3 X 



m/R. 



dp. 



£rXl0 G . 



Mean^vxlO 6 . 









Mean XvxlO 6 . 









6. 



530 



810 



655 



XIII. 



73 



430 



170 



215°. 



520 



820 



635 



* 215. 



42 



450 



92 



130 x10 V 



125 



360 



350 



120xl0 3 o>. 



50 



400 



125 



4-510. 



155 



400 



390 



129. 



T 



ube broken. 



6. 



-140 



440 



-320 









310°. 

 18xl0 6 w. 



-145 

 -120 



410 

 420 



-355 



-285 



Tube of high resistance inserted. 



-296. 



-125 



450 



-280 



XIV. 



81 



400 



202 





-125 



470 



-265 



215°. 



84 



420 



200 





-115 



430 



-270 



730xl0 3 w . 



165 



830 



200 











+205. 



180 



830 



220 



Tube of low resistance inse 



rted. 



XIV. 



70 



415 



170 



XIII. 

 100°. 



Ilxl0 6 ui. 

 + 135. 



52 



64 



115 



99 



415 

 420 

 820 

 810 



125 

 150 

 140 

 125 



310°. 

 36 x10V 



+ 155. 



60 

 130 

 125 



54 



420 

 820 

 780 

 400 



145 

 160 

 160 

 135 



* Dirty, after an explosion. 



19. In Tables IX. and X. I have briefly summarized the 

 statistics of insulation for oil and for glass. All reference is 

 made to 215°, since these measurements are the more reliable. 

 The table is not intended to convey more than a mere estimate 

 of the conditions encountered. 



Table IX. — Breakdown of Resistance in the case of 

 divers Oils examined. 



the 



Specific resistance at 215 



Relative resistance at 20 



100 



215 



310 









Thin 



Very thick 



Sperm- 

 oil. 



Gasolene. 



Petro- 

 leum. 



mineral 

 machine- 



mineral 

 machine- 









oil. 



oil. 



3X10 6 



1800 xlO 6 



400 XlO 6 



1000 XlO 6 



1200 XlO 6 



60 



10 



26 



300 



CO 



7 



2 



9 



30 



30 



1 



1 



1 



1 



1 





1 



•6 



•5 



•1 



