276 COORDINATION AND SENSATION 



a thorn should be treated in the same manner and should 

 be kept open, not being allowed to heal at the surface first. 

 If one has reason to believe he has been bitten by a mad 

 dog, the wound should be cauterized as above, and a physi- 

 cian should be summoned at once. Deep wounds from ex- 

 plosives, or other causes, should also receive the attention 

 of the physician. Many cases of lockjaw result every year 

 from wounds inflicted by the toy pistols, firecrackers, etc., 

 used in our Fourth of July celebrations. These are due to 

 the embedding in the skin or flesh of small solid particles 

 on which are lockjaw germs. Wounds of this nature 

 should, of course, receive the attention of the physician. 

 Care of the Nails. Relief from a blood blister under 

 the nail is secured by boring a small hole through the nail 

 with the sharp point of a sterilized penknife 

 (page 38). This simple bit of surgery not 

 only relieves the pain, but is frequently the 

 only means of saving the nail. Ingrown toe 

 FIG. 124^ nails are relieved by scraping a broad strip 

 Proper method in the middle of the nail until very thin, 

 of trimming This relieves the pressure, preventing the 

 sides of the nail from being forced into the 

 toe. While the finger nails should be trimmed in a curve, 

 corresponding to the end of the finger, it is recommended 

 that the toe nails be cut straight across (Fig. 124), as this 

 method diminishes the pressure from the shoe and keeps 

 the nails from ingrowing. Shoes that pinch the toes 

 should, of course, not be worn (page 238). 



Care of the Hair. Occasional washing of the hair is 

 beneficial, but too much wetting causes decay of the hair 

 roots, which leads to its falling out. The worst enemy of 

 the hair is dandruff. A method of removing dandruff 

 which is highly recommended is that of rubbing olive oil 



