Human Physiology. 



and the tear-glands over our eye-balls we can influence, but only 

 indirectly by the observance of the general conditions of health. 

 Fresh pure air, exercise, and cheerfulness keep our lungs in 

 order; pure food and other health conditions ensure the nor- 

 mal action of stomach and bowels; but the secreting and 

 excreting organ, scarcely second to any other in importance. 



Fig- 55- 



MAGNIFIED SECTION OF 

 THE SKIN OF THE SOLE OF 



THE FOOT. 



3. Epidermis. 4. Rete 

 Mucosum. 5. Cutis Vera. 

 6. Papillae. 9. Fat-Cells. 

 12. Sweat Glands. 13. Sweat 

 Canals. 14. Pores. 



Fig. 56- 



A SWEAT GLAND FROM THE 



PALM OF THE HAND, magnified 



40 diameters. 



the skin, is more than any under our control. I have called 

 the skin an organ, but it is in reality a wonderful collection ofc 

 organs glands of secretion and excretion, which are constantly; 



