This interesting subject, a study of the haemolytic activity of urine, on which there is little
available literature, is of comparatively recent
development.If the complex nature of such a substance as
urine, be taken into consideration for a moment, the
complexity of any investigation such as this will be
realised in so far as attempting to obtain definite
facts are concerned.Again, if urine be looked upon not as a single
substance but rather as a collection of substances
it is obvious that any results obtained must necessarily be interpreted with caution.The first thing that comes to one's mind when
the question of the presence of haemolysins in urine
is thought of, seems to be such simple factors as,
Decomposition, Tonicity, or some of the well known
constituents which may occur in urine from time to
time. Curiously enough these factors, as has been
shown and is corroborated in the following experiments,
seem to play little, if any, part in the production
of haemolysis of the erythrocytes of a blood suspension
