Oily foods have a
tendency to make soft fats which will not bear cooking." Such
differences are also seen between English and American bacon, the former
being much more solid; and we know, also, that the fat of different
animals varies remarkably, and that some, as the fat of hay-fed horses,
is readily worked off. Such facts as these may reasonably be held to
sustain the popular creed as to there being bad fats and good fats, and
they teach us the lesson that in man, as in animals, there may be a
difference in the value of the fats we acquire, according as they are
gained by one means or by another.
The recent researches of L. Langer have certainly shown that the fatty
tissues of man vary at different ages, in the proportion of the fatty
acids they contain.
I have had occasion, of late years, to watch with interest the process
of somewhat rapid but quite wholesome gain in flesh in persons subjected
to the treatment which I shall by and by describe. Most of these persons
were treated by massage, and I have been accustomed to question the
masseur or masseuse as to the manner in which the change takes place.
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