UTAH ACADEMY OF SCIENCES 83 
gredients, one of which is more soluble in some solvents 
than in others and that a part of it when heated under- 
goes destructive distillation. He considers asphaltums to be 
composed of a volatile oily portion, petrolene, and a non- 
volatile, asphaltene, which is decomposed by heat. The 
article closes with descriptions of some experimental mixes 
made with gilsonite for paving, roofing, varnish, etc. 
Blake" describes gilsonite, giving it the name uintaite 
from its place of occurrence and treats briefly of its fus- 
ibility, solubility in oils, melted wax, tallow, ozokerite, 
turpentine, naphtha, etc. He gives an analysis made by 
Fristol and Sawyer as follows: 
APTN [arate aleck Cela date feles Viet 78.43 per cent 
PPMATOUC. hill aes cities ve’ ats 10.20 
PUREE MOT ee Bh le PAA 
GIN eS Se aud cailaiah ot ia a Mer toad 8.70 
PRM IAA Se eal) USah eee Guna 40 
100.00 per cent 
Raymond’? describes gilsonite but pays more attention 
to the occurrence of it and other hydrocarbons in eastern 
Utah than to its chemical properties and composition. 
He gives an analysis by T. M. Brown as follows: 
DEMERS bate Pease dare eig staan ee 80.88 per cent 
PRET ok 8 ie 1; wheiierorayerede heveyaye 9.76 
TOTREOGET oe. cid ois Schaal Levies 3.30 
RR RORE eee hiss)! once aah een ea ean 6.05 
PRMD 25g Palate es ju de aay bons hed d 01 
100.00 per cent 
The earlier analyses of asphalts gave rather large per- 
centages of oxygen but this was probably because the 
sulphur content had not been recognized and the oxygen was 
supposed, with the carbon and hydrogen, to make up the 
ash free bitumen. Still some analyses which report sul- 
phur and nitrogen also report small amounts of oxygen. 
ue. & M. J. ae ae das 
As) es LS ES VOL 
