IN HYGIENIC PHYSIOLOGY. 155 



26. Why is the outer surface of a kid glove finer than 

 the inner ? 



This illustrates the difference in texture between the cutis 

 and cuticle ; the dermis and epidermis. 



27 WJiy will a brunette endure the sun's rays better 



than a blonde ? 



(See Physiology, p 51.) 



The skin is perhaps of a coarser texture, and not so sensi- 

 tive to heat. May it not be also that the black pigment ab- 

 sorbs the heat and radiates it again rather than transmits it 

 directly to the internal organs ? It has also been suggested that 

 there is an increased flow of blood in the darker skin, and 

 hence increased perspiration. 



28. Does patent-leather form a healthful covering for 

 the feet? 



No. The pores of the leather are partly filled, and hence 

 the insensible perspiration is largely restrained. 



29. IVIiy are men more frequently bald than women ? 



This is to some extent the effect of the close, unventilated 

 head-covering commonly worn by men. 



30. On what part of the head does baldness commonly 

 occur ? 



On that part most fully covered by the hat or cap. 



31. WJiat does the combination in our teeth of canines 

 and grinders suggest as to the character of our food ? 



That we are to eat a mixed diet of vegetable and animal 

 food.* 



* The question of the use of animal or vegetable food may well be re- 

 mitted to the arbitrament of nature, as expressed in the desires ; by which 

 it would be victoriously decided, in all such climates as ours, in favor of 

 the flesh-eater. But the sufficiency of vegetable food, if widely varied, to 

 maintain health and even strength, is not to be questioned, for those who 

 like it. When we hear that the ancient Persians lived a good deal on 

 water-cress, we naturally connect in our minds their physical inferiority 



