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 Because exercises grow deadly dull, I have had a certain suc­cess with the medicine ball to develop trunk muscles. Reso­lution lasts longer when brother or husband takes an interest. When $3.50 is deemed too much outlay, a good substitute is found in a bag in which four pounds of oats is sewed.

It has been interesting to note how stable attitudes are, as shown in observations taken at varying intervals, whether such attitudes are good or the reverse (Fig. 42). One occasionally finds a "weak back" that sways and that cannot be steadied until a course of muscular exercise has been taken (Fig. 41.)·