File:A practical treatise on urinary and renal diseases - including urinary deposits (1879) (14780719612).jpg

Identifier: practicaltreatis1879robe (find matches)
Title: A practical treatise on urinary and renal diseases : including urinary deposits
Year: 1879 (1870s)
Authors: Roberts, William, Sir, 1830-1899
Subjects: Urine Urinary organs Kidneys Kidney Diseases Urinary Calculi Urinalysis
Publisher: Philadelphia : Lea
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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t the appearance ofnarrow glassy cylinders. They vary in breadth from ^ tot^oo °f an inch. Flax fibres (b) are jointed at intervals, andhave a round, solid appearance. Their broken ends are usuallytorn into a brush of fibrillar. When sharply bent they breakwith a green-stick fracture. Woollen hairs (c) present theappearance of hard cylinders, with fine transverse markingsand slight serrations along their margins. From their elon-gated form and somewhat similar diameters these three objectsare liable to be mistaken for casts of the uriniferous tubes. * This stand was constructed for me by Mr. Payne, of the firm of Motters-head and Co., Market Place, Manchester, from whom similar ones may beobtained, completely furnished, for the price of £2 2s. With the stand issupplied a printed card, containing directions for urine-testing. EXTRANEOUS MATTERS. 7 The latter, however, are distinguished by their softer aspectand less defined outline, and they are never fibrillated at theirextremities.
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Fig. 2.—Extraneous matters found in urine, a. Cotton fibres, b. Flax fibres.c. Hairs, d. Air bubbles, e. Oil globules. /. Wheat starch, g. Potato starch.h. Pdee-starch granules. Hi. Vegetable tissue, k. Muscular fibres. I. Feathers. A few air-bubbles (d) are generally retained beneath thecovering-glass of the microscopic slide, and are apt to puzzlestudents. If small, they are spherical; if large, irregularlyflattened. They are identified by their strong refraction, 8 INTRODUCTORY. deeply-coloured thick borders and clear centres. Oil-globules(e) are sometimes present in urine as a morbid product, inwhich case they are always very minute. More often theyoccur as accidental impurities : they may be derived from theuse of an oiled catheter ; from milk, butter, broths, and otherarticles of food ; from oily substances previously contained inthe insufficiently cleansed bottle in which the urine has beenconveyed for examination. Oil-globules have a less stronglymarked outline than air-bubb

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