urrency, can infallibly detect
spurious money by a glance at the engraving or a touch of the paper, so
the experienced physician, by his great familiarity with disease,
becomes equally skilled in detecting the nature and extent of a chronic
malady from a written description of its symptoms.

URINARY SIGNS.

A careful microscopical examination and chemical analysis of the urine
is a valuable aid in determining the nature of many chronic diseases,
particularly those of the nervous system, blood, liver, kidneys,
bladder, prostate gland and generative organs. This important fact is
not overlooked at the Invalids' Hotel and Surgical Institute, where an
experienced chemist is employed to make such examinations and report the
result to the attending physicians. Medical authors, professors, and
practitioners of all schools, admit and even insist upon the importance
of such examinations in diagnosticating diseases. Many practitioners
neglect to take advantage of this invaluable aid, while others fear that
if they attach much importance to such examinations they will be ranked
with "uroscopian" or "water" doctors, a class of enthusiasts who claim
to be able to correctly diagnosticate every disease by an examination of
the urine. Persons consulting us and wishing to avail themselves of the
advantages afforded by these examinations can send small vials of their
urine by express. The vials should be carefully packed in saw-dust or
paper and enclosed in a light wooden box. All charges for transportation
must be prepaid, and a complete history of the case including the age
and sex of the patient, must accompany each package, or it will receive
no attention. This saves valuable time by directing the examination into
the channels indicated, thus avoiding a lengthy series of experiments.
As we are daily receiving numerous vials of urine, every sample should,
to prevent confusion, be labeled with the patient's name.

[Illustration: Binocular Microscope used at the Invalids' Hotel and
Surgical Institute.]

[Illustration: Fig. 1.]

There is a natural, definite proportion of the component elements of
every solid and fluid of the human body. These proportions have been
reduced to definite standards, a deviation from which affords evidence
of disease. Thus, there being a fixed standard in a normal proportion of
the elements of the blood, any deviation from it, as in anaemia,
leucocythaemia, etc., indicates disease. So also the standar