596 



OF SECRETION AND EXCRETION 



rior there is ordinarily to be seen a little finely granular matter, with a few 

 minute fat-globules clustered round the nucleus. The cell-wall is remarkable 

 for its delicacy, and is one of the first structures to undergo decomposition ; and 



Fig. 165. 



A small portion of the Kidney, magnified about 60 times : 1, supposed csecal extremity of a tulmlus urini- 

 fcrus; 2, 2, recurrent loops of tubuli; 3, 3, bifurcations of tubuli; 4, 5, 6, tubuli converging towards the 

 papilla: 7, 7, 7, Corpora Malpighiana, eeen to consist of convoluted knots of bloodvessels, connected with a 

 capillary network ; 8, arterial trunk. 



