A treatise on Bright's disease and diabetes, with especial reference to pathology and therapeuticsIncluding a section on retinitis in Bright's disease . ying the Histology ofthe Kidney. For a proper study of the minute changes in a kidney,whether healthy or diseased, it is necessary that sections shouldbe made in two directions: 1st, longitudinally, or in the directionfrom the cortex towards the papillse; 2d, transversely to thisdirection, or tangentially. In this manner the relation betweenthe elementary tissues which make up the organ is preserved. STRUCTURE OF THE KIDNEY. 43 and tlie change
A treatise on Bright's disease and diabetes, with especial reference to pathology and therapeuticsIncluding a section on retinitis in Bright's disease . ying the Histology ofthe Kidney. For a proper study of the minute changes in a kidney,whether healthy or diseased, it is necessary that sections shouldbe made in two directions: 1st, longitudinally, or in the directionfrom the cortex towards the papillse; 2d, transversely to thisdirection, or tangentially. In this manner the relation betweenthe elementary tissues which make up the organ is preserved. STRUCTURE OF THE KIDNEY. 43 and tlie changes in them may be studied understandingly. Fromcuts in the first direction one picture only is obtained, whichmay extend from the cortex to the papillae. Cuts in the latterpresent a different picture, according as they are made throughthe cortex, or at different situations in a medullary cone—nearthe cortex, between it and the papilla, or at the papilla will be found that in the various forms of Brights diseasethe cortex alone is generally involved, so that for the study ofthese conditions it is necessarv only to make sections throuo-h. Longitiuliual ^section through the cortex. Tubules tunning medullary my in centri%showiug fauitly outlines of epithelial cells. Malpighian bodies among sections of con-voluted tul)ules ; in several places these have been laid open, exposing the lumen of thetubule. The nuclei are seen imbedded in the dark granular protoplasm lining thetubules. Thestiiated appearance of the cells is also well shown. Certain tubules arealso transversely cut. X 160. this portion. It is especially desirable that the normal pictureshould be familiar, in order that the abnormal may be under-stood. Fig. 2 will give an idea of the appearance, under a lowpower, of a longitudinal section of an injected kidney. Fig, 44 brights disease. 6, however, presents the ])ictiire of a portion of the cortexunder a higher power, wliich is necessary for the correct appre-ciat
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