86 TRANSACTIONS OF THE 
also been used in the paving industry, especially in Salt 
Lake City. Second South between West Temple and First 
West was paved with rock asphalt in 1896. It has had no 
repairs and is in fair condition after sixteen years of serv- 
ice. 
Another very extensive and at present no doubt the 
greatest use of Utah asphalts is in the manufacture of 
varnishes and paints. Only the purest and best asphalts 
are used for this purpose. Gilsonite and glance pitch are 
used for the best grades, and Trinidad and Bermudez for 
the cheaper grades. The asphalt is refined and then mixed 
with turpentine and linseed oil to make a varnish. Wurtz- 
ellite has been used in the manufacture of a varnish in 
which the particles are held in suspension, not entering 
into solution. 
Asphaltum is practically imperishable”?. The ancient 
Egyptians knew of this property and made use of it to 
preserve their dead. This property has been made use of 
in modern times by coating metal and wood to preserve them 
from decay”*. Reservoirs and aqueducts as well as all 
manner of water-carrying appliances are lined with Utah 
asphalts. For this purpose they are better than coal tar 
because they will not crack after heating or aging. Since 
they are acid proof they find an extensive use in acid 
factories and in industries where acids are employed. As 
roofing compounds they are employed extensively and are 
said to be better for the purpose than coal tar products. 
Some of the uses of the individual hydrocarbons of 
Utah are as follows: 
GILSONITE : 
Manufacture of varnishes. 
Paving industry. 
Electrical insulator**. For this purpose it is com- 
pounded with ebonite. Its non-absorbent property makes 
it valuable as a covering for underground conduits for 
electrical wires. 
2H. L. Culmer Address, Nov. 15, 1912. 
23 New International Encyclopedia, May. 
“TT, A. I. M. EB. Vol. 16, p: 162 
