DECIMAL CLASSIFICATION 
613 General and Personal Hygiene 
Care of Health; Prophylaxis; Individual Health; Laws of Health. 
02, Compends; .03, Dictionaries, Cyclopedias; .04, Essays; .os, Periodicals; 
.06, Societies; .07, Study and Teaching; .08, Sanitary Appliances; .00, His- 
tory, Description, Reports, etc., divided like 930-999. 
Air and Light. 
For Air Analysis, see 543.7; Air Pollution, 614.7; Ventilation, 628.8. 
Climate. Acclimation. See ssi.5, Meteorology; 6x 5.834, Therapeutics: 
614.42, Geographic distribution of disease. 
Health Resorts. Mountain. Sea-shore. 
Regions exempt from special diseases. 
Seasons. Time of Day. 
Malaria. Moisture. Ground Air. See Public Health, 614.775, 614.773. 
and 614.772. 
Purification of Air. 
Special Influences. Ozone, Electricity, etc. 
Quantity of Air Necessary. 
Temperature. See also 536.5, Heat; §51.52, Meteorology. 
Sunlight. 
Food.® Dietetics. 
For Food Analysis, see 543.1; Adulterations, 614.31; Digestion and Nutrition. 
612.3. 
Dietaries. 
Including food for special classes of people; literary men, soldiers, etc. 
Food for Infants. 
Food for the Sick. 
[ncluding means for giving nutrition, baths, enemeta, forced alimentation. 
etc. 
Fasting. Famine. Starvation. 
Excess of Food. 
Vegetable Food. 
Fruits. 
Animal Food. Meats. 
Fish, Oysters, etc. 
Beverages. 
Tor alcoholic beverages, see 613.81 and 178, Temperance Ethics; Inspection of 
beverages, 614.34. 
Water as a Beverage. 
Impurities in Water and Ice. See also 628.16, Water supply of towns 
Microscopic Analysis. For Chemical Analysis, see 543.3. 
Biologic Analysis. 
Purification. Filtration, Boiling, Chemical, etc. See also 628.16 
Water Supply. 
Cold Drinks. 
Hot Drinks. Tea, Coffee, etc. See also 614.347, Adulterations. 
Mineral Waters, Carbonated Waters. etc. See also 614.348. Adultera 
tions: 615.79, Therapeutics 
Dther Beverages. 
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