198 PRACTICAL HISTOLOGY [XXV 



arteries, one to each capsule, where it breaks up into 

 three or four bunches of capillaries to form the 

 glomerulus. 



The small efferent vein issuing from each capsule 

 and breaking up into capillaries which form a network 

 in the cortex ; the veins from the innermost capsules 

 break up into a brush of capillaries similar to that 

 formed by the arterise rectse and run towards the 

 medulla. 



The small veins running from the capillary network 

 of the cortex to the interlobular veins. 



Here and there the small artery running to a glomerulus 

 may be seen to send a branch direct to the capillary network of 

 the cortex ; similar direct branches will also be seen in the outer 

 part of the cortex running from the ends of the interlobular 

 arteries. 



Small veins at the periphery of the cortex (venae stellate) 

 also arising from the capillaries of the cortex. 



7. Examine the frog's kidney injected with nitrate of silver 

 in Less. xvn. p. 136, and mounted in balsam (cp. also Notes, 

 p. 200). Note the polygonal outlines of the cells of the capsules. 



8. Section of dog's bladder at right angles to the 

 surface (distended with and hardened in ammonium 

 bichromate 2 p.c.). Stain with ha3matoxylin. Observe 



The thin outer fibrous or connective tissue coat. 



The muscular coat consisting of an outer generally 

 speaking longitudinal layer, and an inner generally 

 speaking circular layer ; (in the lateral parts of the 

 bladder, there is but one coat, formed of a plexus of 

 fibres). 



The inner connective tissue coat. 



The stratified epithelium, consisting of three or four 



