Clinical lectures on the principles and practice of medicine . perfectly prepared, cases still occasionally occur, such as the onerecorded by Dr. Turner of Keith,f of a man who, in 1841, passed four-teen, and in 1845—40, other eighteen of these concretions. * Monthly Journal of Medical Science, June Monthly Journal of Medical Science, Sept. 1841 and January 1848. Fig. 391. Hairs from the caryopsis of the oat, felted together, and mingled withgranular masses of the phosphate and carbonate of lime. 250 diam. 282 PRINCIPLES OF MEDICINE. Amyloid and Amylaceous Concretions.—Valentin,* Lebert
Clinical lectures on the principles and practice of medicine . perfectly prepared, cases still occasionally occur, such as the onerecorded by Dr. Turner of Keith,f of a man who, in 1841, passed four-teen, and in 1845—40, other eighteen of these concretions. * Monthly Journal of Medical Science, June Monthly Journal of Medical Science, Sept. 1841 and January 1848. Fig. 391. Hairs from the caryopsis of the oat, felted together, and mingled withgranular masses of the phosphate and carbonate of lime. 250 diam. 282 PRINCIPLES OF MEDICINE. Amyloid and Amylaceous Concretions.—Valentin,* Lebert,-)- others, have figured rounded mineral bodies with concentric circlesfrequently present in the brains substance, and more or less soluble inmineral acids. In April 1847,§ I- presented a portion of a tumor tothe Pathological Society of London, which was attached to the tento-rium, and crowded with similar bodies. They were evidently mineralconcretions, formed, however, on an organic base, varying in size from Fig. 392. Jug. 393. jrjg. e Fig. 395. the yoVo-th t° the aoVotb. of an inch in diameter. Their fracture wasexactly like that of starch corpuscles, but they were not rendered blueon the addition of iodine. Nitric acid dissolved the mineral matter,and showed them to be composed of concentric fibres, surrounding anucleus, with distinct nuclei (Fig. 895). They were embedded in afibro-nucleated structure, which formed a sheath round each then, I have frequently seen similar bodies in the arachnoid mem-brane and substance of the brain, and they have also been observed byDrs. Quain, Cleland,}| and many others. These are amyloid bodies. Virchow°TI was the first to point out that several similar-lookingbodies in the brain assumed a pale blue tint on the addition of iodine, andsubsequently became violet-color on being treated with sulphuric considered them to be cellulose, a principle which he also had shown * Handworterbuch der Ph
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectmedicine, bookyear187
