CONTENTS. xvii 



PAGE 



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



blood-pressure and to vaso-motor changes in general . . 691 

 412. The vaso-constrictor nerves of the kidney ..... 693 



413. The vaso-dilator nerves of the kidney 694 



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



blood 695 



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



secretion of urine ~69 



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 696 



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



diffusion. Albuminous urine 699 



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



urea 702 



419. The formation of hippuric acid 703 



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



activity of the skin v 705 



421. The relations of the secretion of urine to food and drink . . . 706 



422. Diuretics 707 



423. Direct action of the nervous system on the kidney .... 708 



SECTION IV. 

 THE DISCHARGE OF URINE. 



424. The structure of the ureter 709 



425. The structure of the bladder 710 



426. The movements of the ureter 710 



Micturition. 



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



the sphincter vesicse 711 



428. The varying tone of the bladder 714 



429. The general nervous mechanism of micturition .... 715 



430. Involuntary and voluntary micturition 716 



431. Changes of the urine during its stay in the bladder .... 717 



SECTION V. 



THE STRUCTURE OF THE SKIN. 



432. The general structure of the skin. The features of the dermis . 719 



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



layer . 720 



434. The stratum granulosum and stratum lucidum .... 721 



435. The characters and genesis of the cells of the horny layer ; kreatin . 722 



436. The sweat glands 723 



437. The sebaceous glands. The structure of hairs. Pilomotor nerves . 724 



