AOT) COMPOSITION IN OEOANIC COMPOUNDS. 
263 
Table VIII. 
Assumed. 
Observed boiling-point. 
Trichloracetate of Methyl 
Ce CI 3 H 3 O, 
145 
Laurent, 145°. 
Triehloracetate of Ethyl 
Ce CI 3 H 3 O, 
164 
Leblanc, 164°. 
Nitrobenzoate of Methyl 
C 33 H, NO 3 
279 
Chancel, 279°. 
Nitrobenzoate of Ethyl 
C 33 H 3 NO 3 
298 
E. Kopp, 296 °; Chancel, 298°. 
Xanthate of Methyl 
C 3 H 3 O 3 S, 
180 
Chancel, 179°. 
Xanthate of Ethyl 
C^oHioO^S, 
199 
Debus, 200°. 
Nitrate of Methyl 
C 3 H 3 NO 3 
66 
Dumas and Peligot, 86 °. 
Nitrate of Ethyl 
C 4 H 3 NO 3 
85 
Millon, 85°; Kopp, 86 °. 
Nitrate of Butyl 
C 3 H 3 NO 3 
123 
Wurtz, about 130°. 
Nitrate of Amyl 
C:oH„N 03 
142 
Rieckher, 137°; Hofmann, 148°. 
Chloride of Acetyl 
C, H 3 O 3 CI 
56 
Gerhardt, 55°; Kopp, 55° — 56°. 
1 Chloride of Propionvl 
Ce He O 3 CI 
75 
Bechamp, about 80°. 
j Chloride of Butyryl 
Cs H, O 3 CI 
94 
Gerhardt, 95°. 
1 Chloride of Valeryl 
Vo He O 3 CI 
113 
Bechamp, 115°— 120°. 
Dichloride of Ethylene 
C, H, CI 3 
85 
Dumas, 85° — 86°; Pierre, 85°. 
1 Dichloride of Propylene 
C, He CI 3 
104 
Reynolds, 100° — 103°; Cahours, 104°. 
Dichloride of Butvlene 
Ce He CI 3 
123 
Kopp, 122 °; Kolbe, 123°. 
Dichloride of GEnanthylene 
v.H^ci; 
180 
Limpricht, 187°. 
Anisol (Phenate of Methyl) 
C^He O 3 
153 
Cahours, 152°. 
Phenetol (Phenate of Ethyl) 
Cie Hio O 3 
172 
Cahours, 172°; Baly, 175°. 
Phenamylol ( Phenate of Amyl)... 
229 
Cahours, 224° — 225°. 
Chloride of Benzoyl 
C^.He O3CI 
196 
Malaguti, 195°; Cahours, 196°; Kopp, 198 °. 
Chloride of Toluyl 
C,eH, O3CI 
215 
Cahours, 214° — 216°. 
Hydride of Benzoyl 
V 4 He O3 
179 
Kopp, 179 °. 
Hydride of Cumyl 
VoVoO, 
236 
Gerhardt and Cahours, 220° ; Kopp, 237°. 
A few other series will be mentioned in a subsequent part of this paper. Since, as 
I have already remarked, the regularity in question is not altogether general, it may 
often be doubtful whether it exists or not when the observations of the boiling-points 
present considerable discrepancies and uncertainties in several terms of an homologous 
series. As an example, the following series may be quoted : — 
Table IX. 
Assumed. 
Observed boiling-point. 
Cyanide of Methyl 
C, H3 N 
0 
79 
Kopp, 72 °; Dumas, 77°; Buckton and Hofmann, 77° — 78°. 
Cyanide of Ethyl 
Ce H3 N 
98 
Kolbe, Meyer, 88°; Grimm, Limpricht, 98°. 
Cyanide of Propyl 
Ce H, N 
117 
Dumas, Malaguti and Leblanc, 118°'5 
Cyanide of Butyl 
Vo He N 
136 
Schlieper, 125°; Guckelberger, 125° — 128°. 
Cyanide of Amyl 
V.V,N 
155 
Frankland and Kolbe, 146°; Wurtz, 155°. 
The comparison of the boiling-points of the corresponding terms in the several series 
of homologous substances given in the preceding Tables, exhibits several other con- 
stant differences in the boiling-points for certain differences in the formulae. In addition 
