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    |
|            |    |           |         |          |         |