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Show lionet n I'ooil. Green bones provide not only phosphates phos-phates and nitrogen, but also llmo for the shells of tho eggs; hence, oyster shells aro not tho only source from which to procure llmo. Ordinary bono contains from six to eercn per cent, of carbonate ot lime, from fifty to six-ty-flvo per cent, of phosphate of lime, and from twenty to thirty per cent, of organic matter, with proportions of magnesia, etc. Fresu green bones also contain, besides tho llmo compounds, somo proteins, or flesh-formers, wh'ch add to their vnluo as poultry food. Tho best mode of preparing them is to have thorn cut with a bone-cutter. |