COLORED FIGURE i. SECTION OF SKIN (diagram, enlarged 25 times). On the left 

 the connective tissue fibers of the true skin are shown. 



in cutis (f), or dermis, find capillaries, nerve fibers, fat cells, two sweat glands and ducts, four 

 oil glands (two in section), two hairs, three nerve papilla:, five papillae containing capillaries, 

 two muscles for erecting hairs. In epidermis find flat cells, round cells, and pigment cells. 



FIG. 2. WHERE 

 THE FOOD is 



ABSORBED (villus of 



intestine). 



Fir,. 3. WHERE 



THE FOOD is 



USED (cells with 



lymph spaces). 



t'i /. J a *s : fll, nerve of smell ; 

 of, nerve of sight : l>, 

 brain: /, tongue; rf, epi 

 glottis; oe, gullet; 

 //;, thymus gland; 

 lg> lung: A, heart; 

 /, liver; g, stom- 

 ach; s. spleen; 

 /, pancreas: 

 k, kidney; d, 

 diaphragm; 

 m, muscle; 

 u, bladder; 

 ch, spinal 

 cord; v, ver 

 tebne. 



Afusc/e ce//s 



FIG. 2. 



B/ooef ca/J/7/ary 



FIG. 3. 



FIG. 4. 

 IDEAL SEC- 

 TION OF 

 MAMMAL. 



Compare with oigans of 

 m<*n fci'lort-d Fig. 6). 



