128 PRACTICAL MICROSCOPY. 



in weak borax-carmine, clearing with glycerin, and mounting in the 

 same medium. 



HUMAN KIDNEY. SECTION PAEALLEL WITH MAL- 

 PIGHIAN PYRAMID. STAINED WITH H^MA. AND 



EOSIN. 



(Fig. 88.) 

 OBSERVE: 



(Naked eye.) 

 1. The thickness of the cortex, and its granular appearance 



as compared with the medullary portion. 



FIG. 88. SECTION OF HUMAN KIDNEY, CUT PARALLEL TO THE PYRAMIDS OF FERREIN. SHOWING 

 THE CORTEX AND PART OF A MALPIGHIAN PYRAMID. X 30. 



A, A. Capsule of kidney. 



B, B. Pyramids of Ferrein. 



C, C. Cortical labyrinths. 



D, D. Malpighian bodies. Many of the glomeruli drop out in the course of preparation, and 

 such empty capsules of Bowman appear as light circular spots. 



E, E. Interlobular arteries. 



F, F. Boundary region. 



G, G. Transverse sections of vessels of the arcades. 

 H. Base of a Malpighian pyramid. 



