Clinical diagnosis : the bacteriological, chemical, and microscopical evidence of disease . rendered more certain and expeditious by the useof Stenbecks sedimentator (v. Jaksch, LittenZb), the nature of which isexplained by the accompanying figure (fig. 98). As used by the author,it is fitted with a treadle-wheel, and worked by the foot instead of thehand. It is also protected by a wooden case, within which the centri-fugal apparatus is made to rotate. This is a precaution against this instrument a few minutes is sufficient to produce a depositeven in urine which contains but li
Clinical diagnosis : the bacteriological, chemical, and microscopical evidence of disease . rendered more certain and expeditious by the useof Stenbecks sedimentator (v. Jaksch, LittenZb), the nature of which isexplained by the accompanying figure (fig. 98). As used by the author,it is fitted with a treadle-wheel, and worked by the foot instead of thehand. It is also protected by a wooden case, within which the centri-fugal apparatus is made to rotate. This is a precaution against this instrument a few minutes is sufficient to produce a depositeven in urine which contains but little sediment, and where it is avail- CELLULAR CONSTITUENTS 257 able no other procedure is required. The sediment when deposited isAvithdrawn by means of a pipette and submitted to microscopical exami-nation as already directed. After some years experience of an instru-ment of this kind, the author can speak in the highest terms of itsusefulness, in spite of Altons36 depreciatory comments. Fr. Winlderand J. Fischer2,7 have employed a galvanic current to precipitate theurinary Fig. 98.—StiMibecks Sudimentator. 1. Cellular Constituents (Organised Sediment) of the Urine. 1. Red Blood-Corpuscles.—Red blood-corpuscles occur in variablequantity as a morbid constituent of the urine. They may be so few innumber as not to affect the colour of the fluid, and to be discernibleonly with the microscope; or they may be present in such abundanceas to form a layer several centimetres deep at the bottom of the vesseh R 258 THE URINE and when intimately mixed with the urine impart to it a deep redcolour. The condition in which they are found is not less liable to vary thantheir number. They may retain their proper form, or they may appearas pale yellowish rings (phantom corpuscles of Traube). (See fig. 102.)Important inferences as to their origin are to be drawn from the numberand character of the red blood-cells in the urine. Such cells may bederived from the urethra, the bladder
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