The signs of internal disease, with a brief consideration of the principal symptoms thereof . Roberts, in cancer. Cystine is rarely seen. It may occur in diminished bile secre-tion. It occurs as opalescent hexagonal tablets wh^ch sometimes over-lap each other. It aids in forming calculi. A drop of HCl or of am-monia on the slide causes its disappearance. With the latter it re-appears on evaporating the reagent. Leucin is rare. It appears as white lamella? or as yellow spherules 230 EXAMINATION OF THE URINE like drops of oil. It resembles sodium urate, but unlike it is not dis-solved by heat. F
The signs of internal disease, with a brief consideration of the principal symptoms thereof . Roberts, in cancer. Cystine is rarely seen. It may occur in diminished bile secre-tion. It occurs as opalescent hexagonal tablets wh^ch sometimes over-lap each other. It aids in forming calculi. A drop of HCl or of am-monia on the slide causes its disappearance. With the latter it re-appears on evaporating the reagent. Leucin is rare. It appears as white lamella? or as yellow spherules 230 EXAMINATION OF THE URINE like drops of oil. It resembles sodium urate, but unlike it is not dis-solved by heat. From oil drops they are distinguished by not beingdissolved by ether. Tyrosin occurs with leucin in small-pox, typhus, typhoid, in acuteatrophy of the liver, leucocythasmia and in occurs in yellow-green globules or as fine needle-like ,radiating?crystals. HISTOLOGIC SEDIMENT. The histologic sediment found in the urine includes pus, blood,epithelium, casts, spermatozoa and bacteria. More rarely are foundfragments of tissue, of new-growths, parasites or their Fig. 78—Triple Phosphates—Slow Precipitate. Amorphous Urates. A Stellate Forms. B Coffin lids. Pus is the most frequent histologic constituent of the urine andmay come from any part of the urinary tract. Pus-coutaining urineis turbid when voided and responds to the tests for albumin. Puscorpuscles are easily recognized by the microscope as pale, circularcells containing finely granular protoplasm and one to three distinctnuclei. Treatment with acetic acid causes them to lose their granularappearance and the nuclei to become distinctly visible. Their sizeis nearly double that of the red blood corpuscle. When a quantityof pus is treated with potassic hydrate it dissolves into a homogeneous. EXAMINATION OF THE URINE 331 sticky mass which will not flow (Donnes test). In testing allow thepus to settle, then pour off the supernatant liquid befoie adding thehydrate. Pus is frequently mixed with mic
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