On this page is a list of the experiments which your committee have been able to learn about, as having been made with sulphate of copper in this country.
--+--------------+----+--------+----------+----------+----------+--------------- | | | | Material |Subsequent| | No| Locality |Year|Process.| Treated. | Exposure.| Results. | Authority. --+--------------+----+--------+----------+----------+----------+--------------- 1|Chili, S.A. |1857|Boucher.|Poplar |R.R. track|Favorable |W.W. Evans | | | | ties | | | 2|Cleveland, O |1870|Thilmany|Ties | " " |Favorable |J.R. Conrad | | | | | | to 1875 | 3|Washington |1872| " |Paving |Laboratory|Unfavor. |W.C. Tilden | | | | blocks | | | 4|Pensacola |1874| " |Live oak |Teredo |Failure |W.H. Varney | | | | | | | 5|Charleston, SC|1875| " |Pine block| " | " |Q.A. Gillmore | | | | | | | 6|San Francisco |1876| " | " " | " | " |C.S. Stewart | | | | | | | 7|Milwaukee |1876| " | " " |Pavement |Favorable,|Schlitz Bg. | | | | | | 1882 | Co. 8|Norfolk, Va. |1876| " |Hackmatack|Teredo |Failure |P.C. Asserson | | | | | | | 9|Charlestown, |1877| " |Various |Laboratory|Favorable |J.F. Babcock | Mass | | | | | | 10|Wabash R.R. |1877| " |Ties |R.R. track|Unfavor. |R.A. Houghton | | | | | | | 11|Wabash R.R. |1878| " | " | " " | " |W.S. Lincoln | | | | | | | 12|New York, |1879| " | " | " " | " |C. Latimer | Pennsylvania,| | | | | | | and Ohio R.R.| | | | | | 13|Lake Shore and|1879| " | " | " " | " |R.A. Houghton | Michigan | | | | | | | Southern R.R.| | | | | | 14|Cleveland and |1879| " | " | " " | " |C. Latimer |Pittsburg R.R.| | | | | | 15|Charlestown, |1879| " |Spruce |Sidewalk |Success |S.G. White | Mass | | | plank | | to 1882 | 16|Baltimore and |1879| " |Ties |R.R. track|Too recent|J.L. Randolph | Ohio | | | | | | 17|Hudson River |1869|Hamar | " | " " |Success |E.W. Vanderbilt | R.R. | | | | | | 18|St. Louis |1882|Fladd | " | " " |Too recent|H. Fladd --+--------------+----+--------+----------+----------+----------+---------------
COMMENTS ON SULPHATE OF COPPER EXPERIMENTS.
The first experiment was carried out by Mr. W.W. Evans, on the Southern Railway of Chili, in 1857, and he informs your committee that in 1860, when he left that country, the ties were still good and in serviceable condition.