f
having swallowed poison, the vomiting should be repeated several
times. It may even be advantageous to drink water and then vomit it
up in order to wash out the stomach.

60 Hammerstein, _Text-book of Physiological Chemistry._

61 Amylopsin is absent from the pancreatic juice of infants, a
condition which shows that milk and not starch is their natural
food.

62 The fact that butter is more easily digested than other fatty
substances is probably due to its consisting largely of a kind of
fat which, on splitting, forms a fatty acid (butyric) which is
soluble in water.

63 Fischer, _Physiology of Alimentation._

64 Beginning the meal with a little soup, as is frequently done, may be
of slight advantage in stimulating the digestive glands. To serve
this purpose, however, and not interfere with the meal proper, it
should contain little greasy or starchy material and should be taken
in small amount.

65 Dr. William Beaumont, an American surgeon of the last century, made
a series of observations upon a human stomach (that of Alexis St.
Martin) having an artificial opening, the result of a gunshot wound.
Much of our knowledge of the digestion of different foods was
obtained through these observations. In spite of the protests of his
physician, St. Martin would occasionally indulge in strong drink and
always with the same result--the lining of the stomach became much
inflamed and very sensitive, and the natural processes of digestion
were temporarily suspended.

66 The lacteals (from the Latin _lacteus_, milky) are so called on
account of their appearance, which is white, or milk-like, due to
the fat droplets.

67 Peptones and proteoses, when injected directly into the blood, are
found to act as poisons.

68 The soluble double sugars (maltose, milk sugar, and cane sugar) are
reduced to the simple sugars (dextrose and levulose). Furthermore
the action on the proteids does not stop with the production of
peptones and proteoses, but these in turn are still further reduced.

69 Energy, which is defined as _the ability to do work_, or _to cause
motion_, exists in two general types, or forms, known as kinetic
energy and as potential energy. _Kinetic_ energy is energy at work,
or energy in the act of producing motion; wh