Excerpt from Traction Tests In considering the cost of. Moving freight over common roads this statement may be taken as true: The ultimate cost of moving freight is in proportion to the force required to draw a given load. If, in other words, it requires twice as much force to draw a load of 1 ton over one kind of road as over another, it will cost twice as much to move freight over the former road as over the latter. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.