. Dairy farming : being the theory, practice, and methods of dairying. Dairy farms; Dairy plants; Milk plants. CRUCIFERS AND LEGUMINOUS PLANTS. 155 Among crucifers, the cabbage, Brassica ole- racen, is used as a cattle-food, especially in autumn and winter. Analysis No. 8 refers to this plant. The inner and vouno^er leaves contain much more. '^' Fig. 50.—Leaf of Rose. water than the older outside leaves, and on the whole this vegetable may be considered more nutritious than the turnip. Savoys, Brussels sprouts, Scotch kale, and red cabbage are all varieties of the common cabbage; so are the ea
. Dairy farming : being the theory, practice, and methods of dairying. Dairy farms; Dairy plants; Milk plants. CRUCIFERS AND LEGUMINOUS PLANTS. 155 Among crucifers, the cabbage, Brassica ole- racen, is used as a cattle-food, especially in autumn and winter. Analysis No. 8 refers to this plant. The inner and vouno^er leaves contain much more. '^' Fig. 50.—Leaf of Rose. water than the older outside leaves, and on the whole this vegetable may be considered more nutritious than the turnip. Savoys, Brussels sprouts, Scotch kale, and red cabbage are all varieties of the common cabbage; so are the eauliilower and broc- coli, in both of which a large number of very imperfect flowers are crowded together to form the white heads so much relished at our tables. The kohl-rabi is a variety in which the stem is enlarged into a fleshy turnip-like knob above ground. The turnip, Brassica rapa, is a widely culti- vated crucifer, and is a food mneh relished by cattle and sheep. The peculiar flavour of the root, which is especially noticeable in a "strong'" turnip, is due to the presence of a pungent essen- tial oil. As will be seen from the analysis (No. 1), the root is very watery, and contains biit little nourishment, so that if an animal tried to get fat on turnips alone, it would have to pass a large quantity of unnecessary water through its stomach. The Swedish turnip, or swede, is speci- fically distinct from the turnip, and is believed to have sprung from Brassica campestris; it is rather more nutritious, and contains less water than the common turnijj (Anal. No. 2). The rape, Brassica napus, is valuable both as green fodder and for ploughing in as a green manure; its seeds (rape and colza) are crushed for oil, and the residue, consisting chiefly of the seed- coats, is made up into cake, and used as cattle- food, and as a fertiliser. An analysis (No. 5ii) of rape-cake is given. White mustard, Sinapis alba, the leaves of which are used as a salad; black mustard, 23 v
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