260 DE. HEEMANN KOPP OX THE EELATIOX BETWEEX BOILIXG-POEST 
with the results of observation, due attention being paid at the same time to the marked 
discrepancies exhibited by the several results of observation obtained in determining the 
boiling-point of one and the same substance. 
In the following Tables I give the calculated boiling-points of a number of compounds 
side by side with the results of several observers : — 
Table II. 
Alcohols CnHn+202- 
Calculated. 
Observed boiling-point 
Methyl-alcohol 
C. H, 0, 
Q H, O 2 
C, H, 0, 
Cs 
Cl4 HlS ^2 
C3.H3,0, 
59 
78 
97 
116 
135 
154 
173 
344 
/ Kane, 60° ; DelflFs, 60°*5 ; Kopp, 65° ; Pierre, 66° ; 
I Dumas and Peligot, 66°'5. 
f Dumas and Boullay,76°; Gay-Lussac, Pierre, Kopp, 
\ Delffs, Andrews, 78°. 
Chancel, 96 °. 
Wurtz, 1 09 °. 1 
f Pasteur, 127 ° — 129°; Cahours, Pierre, Kopp, DelflFs, j 
\ 132°; Rieckher, 135°. 
Faget, 148°— 154°. 
Stadeier, 177° — 177°'5. 
Favre and Silbermann, 366°?. 
j Ethyl-alcohol 
Propyl-alcohol 
Butyl-alcohol 
j Amyl-alcohol 
jCaproyl-alcohol 
CEnanthy 1-alcohol 
Cetyl-alcohol 
Table III. 
Acids Cn Hn 0 
4- 
Calculated. 
Observed boibng-pobit. j 
Formic acid 
C, H, 0, 
0 
99 
J 
Liebig, 99°; Bineau, Favre and Silbermann, 100°; j 
Kopp, 105°. 
'DelfFs, 116 °; Kopp, 117 °; Sebille- Auger, 119°; 
Dumas, 120°. 
'Dumas, Malaguti and Leblanc, about 140°; Lim- 
pricht, Kopp, 142°. 
Kopp, Delfl’s, 156°; Pierre, 163°; Pelouze and 
Gelis, about 164°. 
Dumas and Stas, Delffs, 175°; Kopp, 176°. 
Brazier and Gossleth, Vurtz. 198°; Fehlins, 202° — 
209 °. 
Stadeier, 218°. j 
Fehling, 236°; Perrot, 238°. 
Acetic acid 
C 4 H, 0 , 
118 
1 
J 
Propionic acid 
H, 0 , 
137 
1 
J 
Butyric acid 
C„ H, 0, 
156 
1 
Valeric acid 
C.g H,o 0, 
175 
1 
Caproic acid 
194 
i 
QSnanthylic acid 
Caprylic acid 
C,„ 0, 
213 
232 
1 
Pelargonic acid 
C-- H, , 0 , 
251 
Perrot, 255°; Cahours, 260°. 
^18 18 4 
