HOW TO BUILD A FIRE 



process is brief and insufficient, and the lungs suffer in con- 

 sequence. Naturally, the gravest danger is in winter. 



41. Cause of Mouth Breathing. Some people find it diffi- 

 cult to breathe through the nostrils on account of growths, 

 called adenoids, in the nose. If you have a tendency toward 

 mouth breathing, let a physician examine your nose and 

 throat. 



Adenoids not only obstruct breathing and weaken the 

 whole system through lack of adequate air, but they also 

 press upon the blood ves- 

 sels and nerves of the 

 head and interfere with 

 normal brain development. 

 Moreover, they interfere in 

 many cases with the hear- 

 ing, and in general hinder 

 activity and growth. The 

 removal of adenoids is 

 simple, and carries with it 

 only temporary pain and 

 no danger. Some physi- 

 cians claim that the 

 growths disappear in later 

 years, but even if that is 



true, the physical and mental development of earlier years 

 is lost, and the person is backward in the struggle for life 

 and achievement. 



42. How to Build a Fire. Substances differ greatly as to 

 the ease with which they may be made to burn or, in tech- 

 nical terms, with which they may be made to unite with 

 oxygen. For this reason, we put light materials, like shav- 

 ings, chips, and paper, on the grate, twisting the latter and 

 arranging it so that air (oxygen in the air) can reach a large 



FIG. 23. Intelligent expression is often lack- 

 ing in children with adenoid growths. 



