106 



WHAT IS LIFE ? 



pipe to keep the air in motion ; look at the little 

 hair-like processes which waft the air in motion. 

 Such objects as these lying side by side, carry the 

 egg from the ovary into the womb. 



Here is a section of the skin (fig. 15) showing the 



d 



Fig. 15. Section of skin highly magnified, somewhat diagrammatic, 

 a, Horny epidermis; &, softer layer; 7i, sweat duct; /, small artery; 

 g, g, small veins. (From "Lessons in Elementary Physiology," by 

 T. H. Huxley, F.E.S., 1893, p. 311.) 



little cells lying side by side, perpetually dying on the 

 outside, and we call them scurf. 



