Isometrics of Liquid Matter. 



357 



pensate for Bv, or, as it were, to annul it. The compressi- 

 bilities of the liquids must therefore be known under the given 

 conditions of actual pressure p and temperature. The results 

 of my earlier paper* are available for this purpose, except in 

 the case of ether at high temperature, where the compressi- 

 bility is estimated. Table IX. enumerates the divers com- 

 pressibilities (d^jjdp) as well as the values of Bp corresponding 



to each Sv. 



41. Utilizing these values I constructed the final Table X., 

 in which the values of Ap and A# are such as would be 

 observed if the constant- volume tube were quite rigid. For 

 A0 I give the thermoelectric values only (§ 36), believing 

 these to be more nearly correct. The Table also contains p 

 and 6 , which are the initial or fiducial pressures used in con- 

 structing Ap and A0. For diphenylamine and toluidine p 

 and 6 are estimated. 



Table IX. — Corrections (Sp) for Thermal and Elastic-volume 

 changes of Glass. (Cf. Table VIII.) 



Substance. 



Ap. 



^XlO 6 . 



10 6 x 

 d^/dp. 



dp. 



Substance. 



Ap. 



dvxlO 6 . 



10 6 x 

 d v f ldp. 



dp. 



Ether 

 (14). 



705 

 1630 



440 

 1200 



4- 400 



1750 



200 



800 



95 



60 



100 



80 



4- 4 



30 



2 



10 



Thymol 



a). 



705 

 1155 



715 

 1165 

 1500 



-500 

 -750 

 -500 

 -750 

 -950 



46 



44 

 46 

 44 

 42 



-11 

 -17 

 -11 

 -17 



-23 



Ether 

 (15). 



1640 

 730 

 465 



1210 



+1700 

 350 

 200 

 800 



60 



95 



100 



80 



4-28 



4 



2 



10 



Thymol 

 (2). 



725 

 1170 

 1510 



-500 

 -750 

 -850 



46 

 44 



42 



-11 

 -17 



-20 



Alcohol 

 (i). 



560 



890 

 1580 



- 100 



- 50 



- 100 



66 



63 

 51 



- 2 



- 1 



- 2 



Para- 

 toluidine. 



450 



810 



1130 



-300 

 -410 

 -300 



52 

 50 

 45 



- 6 



- 8 



- 7 



Alcohol 

 (2). 



900 



1590 



540 



890 



- 100 



- 100 

 + 



- 50 



63 

 51 

 66 

 63 



- 2 



- 2 



+ 



- 1 



Diphenyl- 

 amine 

 (1). 



490 

 910 



-450 

 -650 



43 

 40 



-10 

 -16 



Diphenyl- 

 amine 

 (2). 



1345 



480 

 910 



-800 

 -400 

 -700 



38 

 43 

 40 



-21 



- 9 

 -18 





* Am. Journ. [3] xxxix. p. 501 (1890). 



