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Show TEST ROAD MATERIALS FREE Machinery for New Laboratory Installed In-stalled at Colorado Agricultural College. (By O. V. ADAMS, Colorado Agricultural College, Fort Collins, Colo.) The experiment station of the Colorado Col-orado Agricultural college at Fort Collins Col-lins has just completed the Installation Installa-tion of the machinery for a new laboratory labor-atory for the testing of road materials and Is now fully equipped to make all the standard mechanical tests on rock, broken etone, slag, gravel, sand and top soil. The laboratory has been installed for the purpose of aiding the people of the state In their road-building problems. No charge Is made for the testing of any material ; the sample must, however, be of sufficient size to enable complete investigations to be made. The first systematic attempts to determine de-termine the value of rock for road building purposes by means of laboratory labora-tory tests were made In France in 1878, j b - i ! kt v v ! v, A 1 KW - ?W v. Stretch of Improved Road Between Cripple Creek and Canon City, Colo. I and the excellence of the French roads can no doubt be partly attributed to the selection of the best available materials ma-terials for their construction. In 1803, a road material testing lab-I lab-I oratory was established by the Massachusetts Massa-chusetts highway commission, with the late Logan W. Page in charge. This work has developed until today there are many such laboratories throughout through-out the United States, and road engineers en-gineers are more and more coming to realize the value of such tests and to specify that material used in road construction con-struction shall measure up to certain established standard requirements. - INJURY DONE TO GOOD ROADS Autos and Motor Trucks Do More Harm Than Steel-Tired Vehicles 1 on Account of Speed. ' There is more damage done to the roads now by autos and motor trucks lhan steel-tired vehicles ever did, for the reason of greater speed of motor vehicles and their drivers have the same fool tracking habit the horse drivers always had. Driving in the same tracks never damaged steel tires, but it is the destruction of the roads and rubber iires. The motor vehicle is worse for the roads than horse rigs on account of greater speed. The reason rea-son running In a track is damaging to rubber tires, is a sharp rock will be set in the side of the track with the sharpest corner out to nip a piece out of every tire, and sharp rocks cannot dodge or bounce out of the bottom of the track, but cut holes in the tires and break the fabric, causing the so-called stone' bruises and rim cuts, even on nroperly inflated tires. DOUBLED LIFE OF HIGHWAYS French Engineers Find That Simple, Surface Coatings of Tar Were of Much Benefit. It has been the experience of the French engineers in building roads during dur-ing war times that simple, surface coatings of a tar preparation more than doubled the life of the road. This being true. It would seem advisable in the construction of all country roads, to cover the surface with some crushed rock or gravel, and then use the heavy tar preparation, because the binding effect prevents the material from slipping slip-ping to one side; it holds the materia! Intact and gives the road a hard-surfaced covering that is not only lasting, but adds to the efficiency of the road. Good Roads a Necessity. Good roads have become a necessity, neces-sity, not only on the public and main highways, but on the township lines as well. Read Building Is Simple. Road building is absurdly simple. Just two things are required money and brains. And the more brains you use, the less money you need. Permanency Essential. It Is essential that good roads hav |