Relation to Preesun and Temperature. 



503 



»fc=»*(l-Ml+93p) l/9 ) ( 5 ) 



referred to the initial temperature Q . v d is directly measured. 

 Hence the only hypothesis occurring in equation (5) is equa- 

 tion (2). In tables 23 to 28 I have given the value of v Gp com- 

 puted conformably with equation (5), for the temperatures of 

 observation. If these results be constructed graphically, the 

 conditions subject to which pressure and temperature must 

 vary, in order that v ep may remain constant are given by draw- 

 ing horizontals. In the supplementary tables certain isometric 

 data are inscribed. 



Table 25. 

 Isothermals of Diphenylamine, referred to unit volume at 65° and atm. 



6= 



310° 



185° 



100° 





Isometrics. 



9 



• 

 Ap 





jt>= 

 100 

 200 



1-235 

 1211 



1-191 

 1173 

 1157 

 1-143 

 1130 

 1119 

 1108 

 1 098 

 1-089 

 1-064 

 1-050 



1-093 

 1-082 

 1-071 

 1 061 

 1-053 

 1-044 

 1036 

 1-029 

 1-022 

 1-016 

 1010 

 •993 

 •983 



1-012 



1006 



•999 



•993 



•988 

 •982 

 •976 

 •972 

 •967 

 •962 

 •958 

 •945 

 •938 



1-000 

 •994 

 •988 

 •982 

 •977 

 •971 

 •967 

 •962 

 •957 

 •953 

 •949 

 •937 

 •930 



65 

 100 

 185 







190 



1200 



1.00 



300 



400 



500 



600 



700 



800 



900 



1000 



1300 



1500 



Rate - 09° per atmosphere. 



Table 26. 

 Isothermals of Thymol, referred to unit volume at 20° and 20 atm. 















Isometrics. 



0= 



310° 



185° 



100° 



65° 



28° 

























e 



Ap 



Volume. 



i>= 20 



1 



329 



1*162 



1-076 



1-042 



1-000 



65 



40 



1-04 



120 



1 



279 



1-145 



1-066 



1-035 



•994 



100 



410 





220 



1 



242 



1-129 



1-057 



1-028 



•9S8 



185 



1090 





320 



1 



212 



1-116 



1-049 



1-021 



•982 



310 



1500 





420 



1 



188 



1*103 



1-041 



roi5 



•977 







520 



1 



167 



1-092 



1-033 



1-009 



•972 



Rate -11 



per atmosphere. 



620 



1 



148 



1081 



1026 



1-003 



•967 







720 



1 



131 



1-072 



1-020 



•998 



•9G2 







820 



1 



116 



1-064 



1-013 



•993 



•957 







920 



1 



103 



1-055 



1-007 



•988 



•953 







1020 



1 



091 



1-047 



1-002 



•983 



•949 







1320 



1 



059 



1-026 



•986 



•970 



•937 







1620 



1040 



1-014 



•977 



•961 



•930 







33. Isometrics. — Some remarks on these tables are essential. 

 In case of alcohol the curves for 28° to 185° are a family of 



