CONTENTS. xv 



PAGE 



411. The relation of the flow of blood through the kidney to variations in 



blood-pressure and to vaso-motor changes in general . . 660 

 412. The vaso-constrictor nerves of the kidney ..... 662 



413. The vaso-dilator nerves of the kidney 663 



414. The influence on the renal circulation of chemical substances in the 



blood 664 



415. The connection between changes in the renal circulation and the 



secretion of urine 664 



Secretion by the Renal Epithelium. 



416. The evidence of the secretory activity of the epithelium. Ex- 

 periments on amphibia. The results of injecting sulphindigo- 



tate of sodium 665 



417. The nature of glomerular secretion; its relation to filtration and 



diffusion. Albuminous urine 668 



418. The nature of the work of the epithelium as regards the secretion of 



urea 671 



419. The formation of hippuric acid ....... 672 



420. The relations of the secretory activity of the kidney to the secretory 



activity of the skin . 674 



421. The relations of the secretion of urine to food and drink . . . 675 



422. Diuretics 676 



423. Direct action of the nervous system on the kidney .... 677 



SECTION IV. 



THE DISCHARGE OP URINE. 



424. The structure of the ureter 678 



425. The structure of the bladder 679 



426. The movements of the ureter 679 



Micturition, 



427. The muscles of the bladder, their action, the nerves governing them; 



the sphincter vesicaj ......... 680 



428. The varying tone of the bladder 682 



429. The general nervous mechanism of micturition .... 682 



430. Involuntary and voluntary micturition 684 



431. Changes of the urine during its stay in the bladder .... 685 



SECTION V. 



THE STRUCTURE OF THE SKIN. 



432. The general structure of the skin. The features of the dermis . 6sC> 



433. The structure of the epidermis ; the Malpighian and the horny 



layer 687 



434. The stratum granulosum and stratum lucidum .... 688 



435. The characters and genesis of the cells of the horny layer; keratin . 689 



436. The sweat glands 690 



436. The sebaceous glands. The structure of hairs 691 



