after boiling, the
liquid should turn red litmus paper blue; it is then ready for the
addition of the culture and incubation in the same manner as with milk.
A solution of malt--the extract dissolved in hot water is
convenient--may also be used instead of milk, and strongly malted bread
or biscuits are excellent to take with the soured milk or cultures in
other mediums, to supply food for the bacillus in the form of malt
sugar. Other sugars, cane or grape, are also very useful, and may be
taken in the form of fruit juices, syrups, confections, jams, sweet
puddings, etc.

We lay stress on the use of soured milk or other cultures of the
Bulgarian bacillus by people in health as a probable preventive of
disease and a possible agent in the lengthening of life, but it may be
of interest to give a short account of its use by medical men in the
treatment of various ailments. An English authority on the subject, Dr.
Herschell, states that the symptoms of the poisoning of the system by
the toxic substances produced by injurious bacteria in the large
intestine may include headaches, misery and depression of spirits,
drowsiness and stupor, giddiness, dimness of sight and dizziness,
fatigue without obvious cause, both of the muscles and brain, fear,
panic, and nervousness, disagreeable sensations in the limbs or face,
such as numbness, tingling, or prickling, crawling sensation of weight
or of heat or cold, dyspepsia of the sort where there is a deficiency of
hydrochloric acid and pepsin in the gastric juice, accompanied by
flabbiness and loss of power in the muscles of the stomach, and
characterised by flatulence, nausea, loss of appetite, with discomfort
and weight after food, furred tongue, emaciation, earthy colour of the
skin, offensive perspiration and the other signs of biliousness,
enlargement of the liver, and anaemia. These symptoms may have other
causes, and when one or several of them are present a chemical and
physical examination of the urine and faeces is necessary to prove that
they have resulted from auto-intoxication. When this is shown the
soured milk treatment is indicated, and many striking cures are detailed
as witnesses to its efficacy. The liver and kidneys are the natural
guardians of the body against the toxines we are speaking of, and
frequently they are over-strained; the soured milk treatment greatly
lightens their load. In malignant disease of the stomach, soured milk
will frequently be retained when