IMPORTS IN  1846. 
Palm oil.      Olive oil.      Castor oil.
cwts.         tuns.           cwts. 
Western Africa       475,364            1            —­
United States         13,349          —­             290
Naples and Sicily         14        9,661            —­
East Indies             —­            —­           6,315
Canary Islands         3,719          —­             —­
Malta                   —­          2,237            —­
Turkish Empire          —­          1,712            —­
Tuscany                 —­            832            —­
Spain                   —­            753            —­
Brazil                   525          —­             —­
Ionian Islands          —­            506            —­
Morocco                 —­            368            —­
Madeira                  353          —­             —­
Sardinia                —­            333             11
Miscellaneous              7          471             65
-------      -------        -------
Total           493,331       16,864          9,681

IMPORTS  IN  1850
Linseed.          Rape seed.
quarters.         quarters. 
Russia                  482,813            3,235
Sweden                      870              —­
Norway                      268              —­
Denmark                      37            3,092
Russia                   87,273              645
Hanse Towns               1,153            2,872
Holland                   7,734              201
Naples                    1,476              —­
Austrian Territories         40            2,580
Greece                      —­             1,637
Wallachia and Moldavia      910            1,280
Egypt                    17,517              —­
East Indian Empire       26,142           13,126
Miscellaneous               262              922
--------           ------
Total               626,495           29,495

OIL-CAKE.—­It has been observed by Evelyn that one bushel of walnuts will yield fifteen pounds of peeled kernels, and these will produce half that weight of oil, which the sooner it is drawn is the more in quantity, though the drier the nut the better its quality.  The cake or marc of the pressing is excellent for fattening hogs and for manure.

Oats contain, as a maximum, about seven per cent. of oil, and Indian corn nine per cent.  The cake of the gold of pleasure contains twelve per cent.  Indeed the most valuable oil-cakes are those of the Camelina sativa, poppies and walnuts, which are nearly equal; next to these are the cakes of hemp, cotton, and beech-mast.  In France the extraction and purification of oil from the cotton seed is a recent branch of labor, the refuse of which is likely to prove useful in agriculture; its value as a manure being nearly ten times greater than that of common dung.  Oil is obtained from maize or Indian corn in the process of making whiskey.  It rises in the mash tubs and is found in the scum at the surface, being separated either by the fermentation or the action of heat.  It is then skimmed off, and put away in a cask to deposit its impurities; after which it is drawn off in a pure state, fit for immediate use.  The oil is limpid, has a slight tinge of the yellow color of the corn, and is inoffensive to the taste and smell.  It is not a drying oil, and therefore cannot be used for paint, but burns freely in lamps and is useful for oiling machinery.