438 BIOLOGY FOR BEGINNERS 



Hutchinson, entire; Preventable Diseases, Hutchinson, entire; Civics and 

 Health, Allen, see index; Primer of Sanitation, Ritchie, entire; Good 

 Health, Jewett, entire; Mind and Work, Gulick, entire; The Human Body 

 and Health, Davison, see index; The Human Mechanism, Hough and Sedg- 

 wick, pp. 289-540; General Hygiene, Overton, see index; Practical Biology, 

 Smallwood, pp. 233-258; Applied Biology, Bigelow, pp. 525-560. 



SUMMARY 



Hygiene, care and health of body (exercise, breathing, food, eyes, etc.) 

 Sanitation, providing healthful surroundings (water supply, drainage, 

 infection, ventilation). 



1. Hygiene of muscles. 



Exercise, increases oxidation. 



Trains heat regulating and excretion. 



Prevents internal congestion. 



Trains heart and arteries. 



Trains breathing organs. 



Aids lymph circulation. 



Exercise should be vigorous, use body muscles, cause deep 

 breathing, occupy mind. 



2. Hygiene of digestion. 



Food should be 



(1) Adapted to body needs. 



(2) Balanced ration. 



(3) Clean and well prepared. 



(4) Eaten when rested. 



(5) Eaten at regular times. 



(6) Accompanied by water. 



(7) Thoroughly chewed. . 

 Errors affecting digestion. 



(1) Rapid eating. 



(2) Insufficient chewing. 



(3) Washing down food. 



(4) Eating too much. 



(5) Not getting rid of waste. 

 Care of teeth. 



(1) Frequent cleaning. 



(2) Use of tooth wash or powder. 



(3) Consult dentist often. 



3. Respiration. 



(1) Train your breathing muscles, ribs and diaphragm. 



(2) Loose clothing for free action. 



(3) Erect position to allow lung action. 



(4) Pure air supply; not necessarily cold. 



(5) Air free from dust. 



