70 THE INTEGUMENT, OR SKIN 



34. Certain hair-dyes also contain lead, together with other 

 noxious and filthy ingredients. These do not work as great 

 harm as the cosmetics, since they are purposely kept away 

 from the skin; but they rob the hair of its vitality. Eye- 

 washes, too, are made from solutions of lead, and many an eye 

 has been ruined by their use. They deposit a white metallic 

 scale on the surface of the eye, which, when in front, perma- 

 nently blurs the sight. 



emanations from the skin shall not accumulate. The wearing of the 

 unventilated beaver hat, or fur cap, is a ready method of suppressing 

 the natural growth of the hair, and of causing the retention of that effete 

 epithelial scale commonly called scurf, or dandruff. The wearing of 

 tightly fitting waterproof coats cannot be habitually practiced without 

 danger to the wearer ; the very painful and troublesome ailment, rheuma- 

 tism, has in many persons been produced by this manner of locking in 

 the excretions of the surface. Dr. B. W. Richardson. 



