102. BONES ought always to form a component part of the stock-pot. They
are composed of an earthy substance,--to which they owe their
solidity,--of gelatine, and a fatty fluid, something like marrow. _Two
ounces_ of them contain as much gelatine as _one pound_ of meat; but in
them, this is so incased in the earthy substance, that boiling water can
dissolve only the surface of whole bones. By breaking them, however, you
can dissolve more, because you multiply their surfaces; and by reducing
them to powder or paste, you can dissolve them entirely; but you must
not grind them dry. We have said (99) that gelatine forms the basis of
stock; but this, though very nourishing, is entirely without taste; and
to make the stock savoury, it must contain _osmazome_. Of this, bones do
not contain a particle; and that is the reason why stock made entirely
of them, is not liked; but when you add meat to the broken or pulverized
bones, the osmazome contained in it makes the stock sufficiently
savoury.

103. In concluding this part of our subject, the following condensed
hints and directions should be attended to in the economy of
soup-making:--

I. BEEF MAKES THE BEST STOCK; veal stock has less colour and taste;
whilst mutton sometimes gives it a tallowy smell, far from agreeable,
unless the meat has been previously roasted or broiled. Fowls add very
little to the flavour of stock, unless they be old and fat. Pigeons,
when they are old, add the most flavour to it; and a rabbit or partridge
is also a great improvement. From the freshest meat the best stock is
obtained.

II. IF THE MEAT BE BOILED solely to make stock, it must be cut up into