Connecticut Avenue Bridge, Washington, D. C. Roadway Built with Tarvia X.

The Passing of Plain Macadam

W

"In these days of progress it is a misdemeanor bordering closely on crime to put an old style macadam pavement on a public road."-Chicago Tribune.

ITHIN the last ten years the character of traffic on our roads has changed completely. A large part of it is now motor traffic and the wheels instead of simply rolling over the road tear up the surface..

The driving wheels of an automobile revolve several more times to the mile than front wheels of the same size, showing the existence of a certain amount of slip, and accounting clearly for the rapid deterioration of brittle macadam surfaces under such traffic.

Deterioration means dust. It also means frequent renewals of the surface at great expense. Obviously, the way to prevent deterioration and to lower maintenance charges is to

make the road surface proof against the sheering actions of driving wheels.

This can be accomplished by the use of Tarvia, which re-enforces the surface, giving it a plasticity and tenacity which will enable it to resist automobile traffic.

Tarvia was the first bituminous binder on the American market and conforms to uni-. versal European experience. It is made in three grades "Tarvia X" for road and pavement construction, "Tarvia A" for surfacing, "Tarvia B" for dust prevention and road preservation.

Our expert advice is at the disposal of any one interested. Illustrated booklets regarding the Tarvia treatments free on request to nearest office.

Food science has taught us that there is much body-building nutriment in the whole wheat grain which we do not get in white flour. The only question is how to make the whole wheat grain digestible. That problem has been solved in the making of

Triscuit

The Shredded Whole Wheat Wafer

It is the whole wheat, steam-cooked, shredded, compressed into a wafer, and baked; the maximum of nutriment in smallest bulk. Many people prefer it to ordinary bread toast. Heated in the oven to restore its crispness it is delicious for luncheon, or for any meal, with butter, potted cheese or marmalades.

Connecticut Avenue Bridge, Washington, D. C. Roadway Built with Tarvia X.

The Passing of Plain Macadam

W

"In these days of progress it is a misdemeanor bordering closely on crime to put an old style macadam pavement on a public road."-Chicago Tribune.

WITHIN the last ten years the character of traffic on our roads has changed completely. A large part of it is now motor traffic and the wheels instead of simply rolling over the road tear up the surface.

The driving wheels of an automobile revolve several more times to the mile than front wheels of the same size, showing the existence of a certain amount of slip, and accounting clearly for the rapid deterioration of brittle macadam surfaces under such traffic.

Deterioration means dust. It also means frequent renewals of the surface at great expense. Obviously, the way to prevent deterioration and to lower maintenance charges is to

make the road surface proof against the sheering actions of driving wheels.

This can be accomplished by the use of Tarvia, which re-enforces the surface, giving it a plasticity and tenacity which will enable it to resist automobile traffic.

Tarvia was the first bituminous binder on the American market and conforms to uni- . versal European experience. It is made in three grades "Tarvia X" for road and pavement construction, "Tarvia A" for surfacing, "Tarvia B" for dust prevention and road preservation.

Our expert advice is at the disposal of any one interested. Illustrated booklets regarding the Tarvia treatments free on request to nearest office.