C. M. Warren on the Volatile Hydrocarbons. 
227 
2p sertxs.”® 
ae ; El Difference of | Range of temperature 
Formula.(?) Boiling-point. x pps sett Bo ees withio dei ae 
° . fore) apatitetaaaeeiey 
C, See 8-9 ° | ° 
OyGH. > 37:0 C,H, 29°0 0-4 
C,.H,, 68°5 C,H, 31°5 06 
LAL 98°1 CHa 29°6 12 
Ryall, 127-6 C,H, 29°5 15 
119°6—4 = 29°-9 
prvere increment of boiling-point for the addition of C,H,—=29°'9. 
3p sERirs. (Not completed.) 
; Difference Range ol temperature | 
ee , El 
Formula. Boiling-point. y ppmnan curd botling-pont Iti ny arbre eg iti. 
° ° 
Rents 174-9 eT 
C,H, 195°8 Cire 20°9 15 
C,H, 216-2 Ca; 20°3 2-2 
: 41-22 20°6. 
Average increment of boiling-point for the addition of C,H,=20°6. 
this is np pete in ee with the fact, so far as Ags experience goes, that 
equal to those in the eee. er, 
he de 
those just cited, might be I 
Sapa and Albert coal ; which z 
point difference 
fore deferred tok 
