Cram, T. J.. co1. U. S. Corps of Engineeres and bot. maj. gen. U. S. A

'\4 

Report upon the Decay and Preservation ofTimber. Made 
(/ in Reponse to request from the office of the Chief of Engineers, 

U. S. A., of 9th of September, 1870, for aReport upon the "Creosoting" 
of Timber. Engineer Departement. (Mit 1 Taf.) 
8. Washington 1871.