RAILROAD CONSTRUCTION 333 
Gillette, H. P.: II;uull)()()k of Rock Excavation. McGraw-Hill Book 
Co., New York, 1916. 
Johnson, J. B. : Theory and Practice of .Surveying. John Wiley and .Son.s, 
New York. 1901. 
KiNDELAN, J.: The Trackman's Helper, Clark Book Co., New York, 1900. 
Lamb, Frank H.: Steam Shovel in Logging Road Construction. The 
Timberman, Oct., 1920, pp. OF) and 68. 
Pope, C. R.: Constructing a High Pile Bridge. The Timberman, Feb., 
1915, pp. 49 and 50. 
Powers, Fred W. : Preventing Track Creeping on Grades. The Timber- 
man, Oct., 1919, p. 45. 
SoMERViLLE, S. S. : Building Logging Railroads with a Pile-driver. The 
Timberman, Augiist, 1910, pp. 37-38. 
Stamm, Samuel A.: A LTnique Logging Railroad Bridge. The Timberman, 
July, 1916, p. 46. 
Tracy, John Clinton: Plane Surveying. John Wiley and Sons, New York. 
1908. 
Webb, W. L.: Railroad Construction. John Wiley and Sons, Inc., New 
York. 1917. 
