65.  Brassica Napo Brassica.  KOHLRABBI.—­A hardy kind of Turnip cabbage, grown much in Germany for fodder:  it is very nutritive, and has the property of resisting frost better than either the turnips or cattle-cabbage.  The seed and culture of this are the same as of Drum-head cabbage.

There are two varieties of this plant, the green and the purple; the latter is generally most esteemed.

66.  Brussels sprouts.—­This is a large variety of cabbage, very productive and hardy.  The culture is the same as for Cattle-cabbage.

67.  Brassica oleracea.  Drum-head cabbage.—­This is usually sown in March and the plants put out into beds, and then transplanted into the fields; this grows to a most enormous size, and is very profitable.  About four pounds of seed is sufficient for an acre.

* * * * *

SEC.  IV.—­GRAINS.

73.  Avena sativa.  Common oats.—­A grain very commonly known, of which we have a number of varieties, from the thin old Black Oats to the fine Poland variety and the celebrated Potatoe-Oats.

These give the farmer at all times the advantage of a change of seeds, a measure allowed on all hands to be essential to good husbandry.  The culture is various; thin soils growing the black kind in preference, which is remarkably hardy, where the finer sorts affecting a better soil will not succeed.  It is applicable both to the drill and broad-cast.  The seed is from six pecks to four bushels per acre, and the crop from seven to fourteen quarters.

74.  CARUM Carui.  Caraway seeds.—­The seeds of this are in demand both by druggists and confectioners.  It is cultivated in Kent and Essex; where it, being a biennial plant, is sown with a crop of spring corn, and left with the stubble during the succeeding winter, and after clearing the land in the spring is left to go to seed.  It requires a good hot dry soil; but although the crop is often of great value, it so much exhausts the land as to be hazardous culture in many light soils where the dunghill is not handy.

The seed is about ten pounds per acre, and the crop often five or six sacks.

75.  CORIANDRUM sativum.  Coriander.—­Is grown in the stiff lands, in Essex, and is an annual of easy but not of general culture.  The seeds are used by druggists and rectifiers of spirits, and form many of the cordial drinks.

The quantity of seed and produce are similar to those of Caraway.

76.  Ervum Lens.  Lentils.—­Once cultivated here for the seeds, which are used for soups; but it is furnished principally from Spain, and can at all times be purchased for less than it can be grown for.

77.  Hordeum distichon.  Common two-rowed barley.—­A grain now in very general cultivation, and supposed to be the best kind grown for malting.  The season for sowing barley is in the spring, and the crop varies according to soil and culture; it is sown either broad-cast, drilled, or dibbled.  The quantity of seed sown is from three pecks to three bushels per acre, and the produce from three to eleven quarters.