It weakens the joints and causes them to grow large and unsightly.
~12.~ When a man uses alcohol and tobacco, their effects upon the bones are not so apparent as are the effects upon the blood, the nerves, and other organs; but when the poisonous drugs are used by a growing boy, their damaging influence is very plainly seen.

A boy who smokes cigars or cigarettes, or who uses strong alcoholic liquors, is likely to be so stunted that even his bones will not grow of a proper length and he will become dwarfed or deformed.
SUMMARY.
1.

To keep the bones healthy they must have plenty of healthful food.
2.

The whole-grain preparations furnish the best food for the bones.
3.

Walking at too early an age often makes the legs crooked.
4.