374 
J. W. Gibbs — Vapor-Densities. 
Table V contains the experiments of Naumann* on acetic 
acid. ‘These consist of ten series (distinguished by the letters 
TABLE 
V.—Acertic Acip. 
Experiments of NauMANN. 
TEMPERATURE. 
78° | 100° | 110° | 120° | 130° | 140° | 150° | 160° | 185° 
f Pressure. 393°5| 411 | 432 | 455 | 477 | 498°5 565 
AJ D. cale. 3°39| 3°23] 3:06| 2:90| 2°75] 2°61 2°28 
D. obs. 3°44] 3°31} 3:14] 2°97) 2°82) 2°68 2°36 
| Exe. of D. obs. +°05} +°08| +°08| +-07] +-07| +°07 a 
( Pressure. 342°3| 369°3| 377-5 | 398°5| 417-5 | 436°5 495 
pi D. calc. 3°35] 3°18} 3°02| 2°85] 2°70} 2°57 2:26 
D. obs. 3°37| 3°22) 3°06| 2°89] 2°75] 2°63 2°31 
| Exe. of D. obs. +02] +-04| +°04] +-04] 4-05! 4-06 +05 
f Pressure. 258 382 
C D. cale. 3°26 9°22 
1 D. obs. 317 2:25 
faxes, of D. obs. —09 +03 
( Pressure 232 252 | 274 | 287°5| 300 335 
pd D. eale. 3°23 2:87| 2°72) 2°58] 2°46 221 
. obs. 3°12 2°94| 268] 2:54} 2-44 2:23 
| Exe. of D. obs. —"11 +°07| —-04] —-04|} —-02 +702 
( ure. 1 186 | 197 | 209 | 221 | 232 | 243 | 253 | 269 
pJ D. cale. 3°53| 315) 2-97] 2°81] 265] 2°52) 241] 232] 218 
D. obs. 3-41| 3°06] 2-91| 2°75| 2°61] 2°50} 2-40] 2-31] 222 
| Exe. of D. obs,| —-1 09| —-0 06} —-04| —-02| —-01| —-01| +74 
( Pressure. 149 | 168 201 
rd D. eale. 350| 3°12 2°62 
D.o 334| 3-01 2°56 
| Exe. of D. obs.) —-16 2s —06 
Pressure 137 | 156 | 1665} 180 | 188 | 199 | 208-2 — 
gd D. cale. 3-48| 309) 2-92} 2°75| 2-60) 2-47| 2°37 aa 
D.o 3-26| 298] 9-81] 2°61] 2:50| 2-40] 2-29 ge 
| Exe. of D. obs) —-22| —-11] —-11| —-14] —-10] —-07] —-08 a 
113 | 130 | 1386] 149 | 107-5| 168°2| 175 a 
H4 D. cale. 3°42} 303) 285| 2°69} 2°55] 2-43| 2°33 ane 
D. obs. -25| 2°94} 2-78! 2°60| 2-47] 2°32] 2°26 2 — 
. Exe. of D. obs.| —-17; —-09! —-o7| —-09| —-og| —-11| —-07 ee. 
Pressure. 80 | 92 98°5| 106 | 112°5| 117°3 129°2 
yd D. calc. 3°32| 2°91! 9-73] 2°58! 9-45| 2°35 2°21 
. obs. 3°06| 2°76] 2°61} 2°46| 2-34] 2°27 211 
Exe. of D. obs.| —-26| —-15| —-12| —-12} —-11| —-08 esti 
| : 66 | 777| 84 | 89°5| 93 8 | 103 ee 
KJ D. cale. 3°26 | 2°85) 2°68| 2°53] 2-40] 2°31} 2°24 dl 
~~ | D. obs. 304| 2°66) 2-49| 2°37] 2-32/ 2°24] 2:16 ol 
_ (Exe. of D. obs.) —-22 | —-19| —-19| —-16| —-o8| —-07| —-08 Be 
A, B, ©, ete.) of observations by Hoffmann’s method.t The 
temperatures of the observations in the different series are for 
* Lieb. Ann, yol. cly, 8. 325. 
+ This isa 
ra 
method of Gay-Lussac, in which the heat is S4P- 
