This applies to the sulphate of copper and barium process. Mr. Thilmany has patented still another combination, in which he uses sulphate of zinc and chloride of barium, which has been noticed under the head of burnettizing.
Experiment No. 17 was tried on the Hudson River Railroad. It consisted of 1,000 sap pine ties, which had been impregnated in the South, by the Boucherie process, with a mixture of sulphate of iron and sulphate of copper, under Hamar's patent. These ties were laid in the tunnel at New Hamburg, a trying exposure, and when examined, in 1882, several of them were still in the track. The process, however, was found to be so tedious that it was abandoned after a year's trial, and has not since been resumed.
In 1882 Mr. H. Fladd, of St. Louis, patented a method which is the inverse of the Boucherie process (experiment No. 18). To the cap fastened to the end of a freshly cut log he applies a suction pump, and placing the other end into a vat, filled with the desired solution, he sucks up the preserving fluid through the pores or sap cells of the wood.
Quite a number of experimental ties have been prepared in this way, with various chemical solutions, chief of which was sulphate of copper, and there is probably no question but that the life of the wood will be materially increased thereby.
Whether the process will prove more convenient and economical than the original Boucherie process can only be determined by practical application upon an extensive scale.
A considerable number of modifications and appliances for working the Boucherie process have been patented in this country; but none of them seems to have come into practical use, probably because of the necessity for operating upon freshly cut logs, and the inconvenience of such applications.
The table on this page gives a record of various experiments with miscellaneous substances.
RECORD OF AMERICAN EXPERIMENTS—MISCELLANEOUS.
--+------------+----+-----------+---------+----------+---------+---------------
| | | |Material |Subsequent| |
No| Locality |Year| Process. | Treated.| Exposure | Results.| Authority.
--+------------+----+-----------+---------+----------+---------+---------------
1|Chestnut |1839|Earle's |Hemlock |Paving |Failure |S.V. Beuet
| Street, | | | blocks | | |
| Philadelpha| | | | | |
| | | | | | |
2|Watervliet |1840| " |Oak |Gun | " | "
| Arsenal | | | timber | carriage | |
| | | | | | |
3|Delaware & |1840| " |Rope |Fungus |Favorable| "
| Hudson | | | | pit | |
| Canal | | | | | |
| | | | | | |
4|Philadelphia|1840|Lime bath |Pine |Railroad |Unfavor. |M. Coryell
| & Columbia | | |stringers| track | |
| Railroad | | | | | |
| | | | | | |
5|Boston & |1844|Sulphate |Ties | " | " |I. Hinckley
| Providence | | of iron | | | |
| Railroad | | | | | |
| | | | | | |
6|Belvedere |1850|Salt |Hemlock | " | " |M. Coryell
| Railroad | | | | | |
| | | | | | |
7|Baltimore |1850|Lime |Ties | " | " |J.L. Randolph
| & Ohio | | | | | |
| Railroad | | | | | |
| | | | | | |
8|Rochester |1852|Payenizing |Ties | " | " |T. Hilliard
| | | | | | |
9|Germantown, |1855|Charring |Fence |Fence |Favorable|G. McGrew
| Ind. | | | posts | | 1879 |
| | | | | | |
10|Pottsville, |1857|Pyrolig'ite|Timber |Railroad |Unfavor. |H.K. Nichols
| Pa. | | of iron | | sills | |
| | | | | | |
11|Erie Railway|1858|Boring | " |Bridges |Favorable|H.D.V. Prait
| | | | | | |
12|Galveston |1867|Casing |Piles |Bridge |Failure |W.H. Smith
| | | | | | |
13|New York |1868|Beerizing |Lumber |Signs |Doubtful |S. Beer
| | | | | | |
14|Wyoming |1868|Natural |Ties |Railroad |Preserved|J.
| Territory | | soil | | track | | Blinkinsderfer
| | | | | | |
15|Chicago, |1870|Foreman- |Timber |Steamboat |Favorable|M.B. Brown
| Ill. | | izing | | | 1879 |
| | | | | | |
16|Illinois |1871| " |Ties |Railroad |Failure |L.P. Morehouse
| Central | | | | track | |
| Railroad | | | | | |
| | | | | | |
17|St. Louis |1871| " |Shingles |Roof | " |F. De Funiak
| | | | | | |
18|Memphis & |1871| " |Ties |Railroad | " |F. De Funiak
| Charleston | | | | track | |
| | | | | | |
19|Washington, |1871|Tripler |Paving |Laboratory| " |W.C. Tilden
| D.C. | | | blocks | | |
| | | | | | |
20| " |1872|Samuel | " | " | " | "
| | | | | | |
21| " |1872|Taylor | " | " | " | "
| | | | | | |
22| " |1872|Waterbury | " | " | " | "
| | | | | | |
23| " |1872|Sulphate | " |Pennsyl- | " |J.A. Partridge
| | | of iron | | vania Ave| |
| | | | | | |
24| " |1872|Samuel | " |F. Street | " | "
| | | | | | |
25| " |1872|Samuel | " |16th St. | " | "
| | | | | | |
26|Norvolk, Va.| - |Red lead |Pine and |Teredo | " |P.C. Asserson
| | | | oak | | |
| | | | | | |
27| " | - |White zinc | " | " | " | "
| | | | | | |
28| " | - |Tar and | " | " | " | "
| | | plaster | | | |
| | | | | | |
29| " | - |Kerosene | " | " | " | "
| | | | | | |
30| " | - |Rosin and | " | " | " | "
| | | tallow | | | |
| | | | | | |
31| " | - |Fish oil & | " | " | " | "
| | | tallow | | | |
| | | | | | |
32| " | - |Verdigris | " | " | " | "
| | | | | | |
33| " | - |Bark on | " | " |Good for | "
| | | pile | | | 5 years |
| | | | | | |
34| " | - |Carbolic | " | " |Failure | "
| | | acid | | | |
| | | | | | |
35| " | - |Tar and | " | " | " | "
| | | cement | | | |
| | | | | | |
36| " | - |Davis' | " | " | " | "
| | | compound | | | |
| | | | | | |
37| " | - |Carbolized | " | " | " | "
| | | paper | | | |
| | | | | | |
38| " | - |Paint | " | " | " | "
| | | | | | |
39| " | - |Thilmany | " | " | " | "
| | | | | | |
40| " | - |Vulcanized | " | " | " | "
| | | fiber | | | |
| | | | | | |
41| " | - |Charring | " | " |Good for | "
| | | | | | 9 years |
| | | | | | |
42|New Orleans |1872| " |Piles | " |Failure |J.W. Putnam
| & Mobile | | | | | |
| R.R. | | | | | |
| | | | | | |
43| " |1872| " & | " | " |Temporary| "
| | | oiling | | | prot'n |
| | | | | | |
44|Galveston & |1870|Charring | " | " | " | "
| Houston |1874| | | | |
| R.R. | | | | | |
--+------------+----+-----------+---------+----------+---------+---------------