PARK AND CEMETERY. 
512 
outward world which is preserved for 
posterity will be more highly appreci- 
ated by them than it is by us, for this 
feeling- has grown in depth and strength 
with the growth of the race, and it will 
probably continue to grow. 
Laws for the protection of scenery 
and the elimination of the billboard 
nuisance are all very well, but we need 
more than a public sentiment. We want 
a public conscience in this respect, 
which will do more than merely resent 
the wanton defacement of natural 
beauty — which will take pains to pre- 
serve and develop by reverent treatment 
scenery which inspires noble thoughts 
by its sublimity or soothes and re- 
freshes the mind by its beauty. 
Nearly twenty years ago the editor of 
Garden and Forest said : “A few in- 
NEW METHODS 
The experience of the last few years 
has demonstrated to road engineers 
everywhere that a turning point has 
been reached in the problem of main- 
taining macadam roads against the dis- 
integrating forces of modern traffic. 
When the destructive action of the au- 
tomobile tires was first observed, sur- 
face applications of bituminous binder 
were believed to be all that was 
necessary. Experience has shown, how- 
ever, while surface treatments, cost con- 
sidered, give good results, it is often 
more satisfactory and economical to con- 
struct the road throughout with a bitu- 
minous binder. 
It is apparent now to the most casual 
observer that the road problem must be- 
come not one of the protection of the 
surface alone, but one which concerns 
the building of the road from the foun- 
dation to the top. Engineers, more ear- 
nestly than ever before, are seeking to 
bond together their road materials in a 
way to get lower maintenance costs. 
In Tarvia, a prepared coal tar of great 
tenacity and viscosity, engineers have 
found a bituminous binder which has 
given remarkable results, and recent im- 
provements in construction of Tarviated 
roads are of much importance to park 
and cemetery engineers. 
Cumulative experience has taught en- 
gineers the economy of putting Tarvia in 
the body of the road itself as a binder. 
The problem was to find a method of 
road building with Tarvia, which with 
little or no additional cost over that of 
present macadam road construction, 
would provide a road strong enough to 
hold up under modern traffic conditions 
and proof against the destructive action 
of automobile tires. 
telligent men are now making protest 
against stripping the forests from our 
mountain tops because this impairs the 
natural and needed supplies of timber 
and water. Why not also protest that 
the destruction of the woods mars the 
beauty of the landscape which is our 
common inheritance? When this sub- 
ject is properly brought home to the 
intelligence and moral sense of the peo- 
ple the reckless destruction of natural 
beauty will not only be held a misde- 
meanor in law, but it will be considered 
a gross outrage against common de- 
cency, and the man or corporation who 
heedlessly and needlessly defaces the 
beauty of the world will be considered 
a public enemy.” 
Recent legislation would indicate an 
awakened public conscience in matters 
In 1906 in Somerville, Mass., the ex- 
periment was tried of bonding the top 
layer of IJ^-inch stone in a macadam 
road with Tarvia. The Tarvia was 
sprayed onto the road hot from a tank 
wagon, in a single coat of gallons 
to the square yard. The Tarvia was 
covered with pea stone and the road 
rolled until solid. This first and now 
classic experiment was a forerunner of 
what is now known in the Lhnted States 
as the penetration method of bitumi- 
nous macadam road construction. 
The desirability of using two coats of 
Tarvia instead of one was soon demon- 
strated and the method framed into a 
specification called “Tarvia Filled Ma- 
cadam,” wdiich has become known 
wherever good roads are built. 
A material for this purpose must nec- 
essarily meet very trying conditions. It 
must combine in itself a material which 
relating to the preservation of the beau- 
ties of nature and the elimination of 
things which disturb the sensitive eyes 
as well as the better legally protected 
ears and nose. And yet mucb remains 
to be done. The spirit of commercial- 
ism is thoroughly organized and abso- 
lutely indifferent to anything but the 
almighty dollar ; there is nothing to 
combat the billboard and numerous 
other nuisances under the name of ad- 
vertising except the public conscience, 
and this can only be successfully mani- 
fested by individual sentiment and ac- 
tion. Do not buy articles advertised in 
an obnoxious way, and write or per- 
sonally interview your legislative repre- 
sentative whenever a question regard- 
ing scenic preservation is being consid- 
ered. J. IT. Griffith. 
w'ill flow freely at a suitable tempera- 
ture; one that will distribute easily 
through the prepared surface of stone ; 
one that will adhere strongly to cold 
stone ; one that will set up and bind the 
road into a solid mass. It must also 
have the property of recementing, if for 
any reasons the pieces of stone become 
separated during the consolidation of 
the road. Preparations of tar alone ful- 
fill all these exacting requirements, and 
Tarvia has been generally recognized 
by engineers as a standard material. 
The form of construction and the 
method of applying the materials must 
necessarily be varied to suit local con- 
ditions. In striving to meet the exact- 
ing requirements of the broad radiating 
thoroughfares extending out from the 
metropolitan centers, a new form of con- 
struction has been developed during the 
past two years to which the name of 
IN ROAD-MAKING WITH TARVIA 
SPRAYING TARVIA X ON THE BROKEN STONE AS A BINDER. 
