Fig. 7, divisions A and B, represent different forms of cystine. Fortunately this substance is rarely found in the urine. When present however it indicates liability to, or the actual presence of, a calculus or stone in the bladder. In division C is a representation of the deposits seen in the urine of those who are greatly debilitated. In division D are seen epithelial cells mixed with mucus.
In Fig. 8, division A, are represented the caudated cells from the deep structure of the bladder. The cells represented in division B are amyloid concretions, found where there is an enlarged prostate gland.
Fig. 9 represents the appearance of spermatozoa as seen in the urine. When present, they afford indisputable evidence of the escape of semen in the renal excretions.
We might add many other illustrations of urinary deposits and state their several indications, but a sufficient number has been introduced to show the importance and practical value of microscopic examinations of the urine in revealing obscure diseases.
Although the microscope is of inestimable value in examining the renal excretion, it does not entirely supersede other valuable instruments and chemical re-agents in determining constitutional changes. By the urinometer we determine the specific gravity of the urine; by the use of litmus its acid or alkaline reaction, is ascertained; while various chemicals, when added to it, produce certain specific changes, according to the morbid alterations which it has undergone by reason of disease. By the application of heat, or the addition of a few drops of nitric acid, the albumen, which is invariably present in Bright's disease of the kidneys, is coagulated. By the employment of other re-agents we may determine the presence of sugar—a characteristic of diabetic urine. And thus we might mention almost innumerable chemical tests by which the several changed conditions of the urine, characteristic of different diseases, may be ascertained with absolute certainty.
THE MOST EMINENT MEDICAL AUTHORITIES ENDORSE IT.
Dr. Eberle, a distinguished allopathic author, thus writes: "Whatever may be the disease, the urine seldom fails in furnishing us with a clue to the principles upon which it is to be treated."
Dr. Braithwaite also says: "We can arrive at a more accurate knowledge respecting the nature of diseases from examining the urine than from any other symptom."