420 ANIMAL PHYSIOLOGY. 
tubes lined with cells, and with an internal, cilated, funnel- 
shaped extremity opening into the body cavity. In such crus- 
2 
42 
SY 
er 
— 
ee. 
HYP 
Fie. 325.—Structure of kidney (after Landois). I. Blood-vessels and tubes (semi-diagram- 
matic). A, Capillaries of cortical substance. B. Capillaries of medullary substance. 
1, artery penetrating Malpighian body ; 2, vein emerging from a Malpighian body ; R- 
arteriole recte; C, venz recte; V,V, interlobular veins; S, stellate_veins ; II, cap, 
sules of Miiller ; X, X, convoluted tubes; T, 7, 7, tubes of Henle; N, N, N,N, communt 
eating tubes; O, O, straight tubes; O, opening into pelvis of kidney. . Malpighian 
body. .A, artery; E, vein; C, capillaries; K, epithelium of capsule; H, beginning of 
convoluted tube. III. Rodded cells from convoluted tube. 1, view from surface ; 2, side 
view (G, granular zone). IV. Cells lining tubes of Henle. V. Cells lining communicating 
tubes. VI. Section of straight tube. 
