A practical treatise on urinary and renal diseases : including urinary deposits . ly puzzled pathologists in times past, seems to have foundits explanation in the presence of a minute parasite whichinfests the mucous membrane of the pelvis of the kidney andthe bladder. The researches of Griesinger, Bilharz, and Haiiey on this, subject will be described in the chapterdevoted to parasites of the kidney (see Bilharzia H^ma-tobia). In tubercle, abscess, renal embolism, hydatids, the haemor-rhage is seldom more than trifling. In active congestion ofthe kidneys after taking turpentine or can
A practical treatise on urinary and renal diseases : including urinary deposits . ly puzzled pathologists in times past, seems to have foundits explanation in the presence of a minute parasite whichinfests the mucous membrane of the pelvis of the kidney andthe bladder. The researches of Griesinger, Bilharz, and Haiiey on this, subject will be described in the chapterdevoted to parasites of the kidney (see Bilharzia H^ma-tobia). In tubercle, abscess, renal embolism, hydatids, the haemor-rhage is seldom more than trifling. In active congestion ofthe kidneys after taking turpentine or cantharides, the bleed-ing is sometimes severe. As these classes of cases are treatedseparately in subsequent parts of this work, it will not benecessary here to go into further details. Sometimes minute calculous concretions are formed withinthe tubuli uriniferi, and occasion hsematuria, which is apt torecur again and again. In these cases microscopic calculi ofuric acid, or oxalate of lime, may sometimes be discovered bya careful examination of the urinary deposit (see Fig. 32). Fig. 32. Microscopic calculi of uric acid, with fibrinous casts dotted with crystallinemolecules of uric acid in a case of recurrent hsematuria. Hematuria from this cause may be unaccompanied by anypain beyond a slight aching or sense of fatigue in the fibrinous casts are also visible in these cases,speckled all over with crystalline molecules, and more albumenis present in the urine than corresponds with the amount ofblood voided. Haemorrhage from the pelvis of the kidney and ureters is HEMATURIA. 137 commonly due to calculous concretions : much more rarely tocancer, tubercle, or parasites. When the blood has thissource the diagnosis turns on the existence of symptoms ofpyelitis, nephritic colic, and the passage of a foreign bodydown the ureter. Sometimes the blood coagulates in theureter, and long vermicular clots may be afterwards recog-nised in the urine. The passage of these clots
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