The Principles of hygieneW.B. Saunders, 1901 - 495 pages |
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Page 17
... usually divided into the immediate and remote causes of disease . The immediate causes of disease may be again divided into three classes , physical , chemical , and vital . The physical causes of disease are such as are brought about 2 ...
... usually divided into the immediate and remote causes of disease . The immediate causes of disease may be again divided into three classes , physical , chemical , and vital . The physical causes of disease are such as are brought about 2 ...
Page 22
... usually dependent upon degenerations of this character . 2. Sex . The influence of sex as a predisposing cause of disease does not manifest itself to any extent until after puberty , and again becomes less marked after the age of forty ...
... usually dependent upon degenerations of this character . 2. Sex . The influence of sex as a predisposing cause of disease does not manifest itself to any extent until after puberty , and again becomes less marked after the age of forty ...
Page 32
... usually between 0.03 and 0.05 part per 100 , but it is subject to still greater fluctuations at different elevations above the earth's sur- face , and at different seasons of the year . The propor- tion is , generally , greatest at the ...
... usually between 0.03 and 0.05 part per 100 , but it is subject to still greater fluctuations at different elevations above the earth's sur- face , and at different seasons of the year . The propor- tion is , generally , greatest at the ...
Page 33
... usually absent from the air of cities and the air which has passed through localities which are thickly populated . It is found in the atmosphere over fields covered with vegetation , over forests , and over the ocean . Ozone is an ...
... usually absent from the air of cities and the air which has passed through localities which are thickly populated . It is found in the atmosphere over fields covered with vegetation , over forests , and over the ocean . Ozone is an ...
Page 34
... usually employed in making these observations ( Fig . 1 ) . Marked deviations from the normal atmospheric pressure , such as are found in exceedingly high altitudes , in balloon ascen- sions to great heights , or when descending to ...
... usually employed in making these observations ( Fig . 1 ) . Marked deviations from the normal atmospheric pressure , such as are found in exceedingly high altitudes , in balloon ascen- sions to great heights , or when descending to ...
Common terms and phrases
ammonia amount animals antitoxin bacillus bacteria baggage bichlorid of mercury Board of Health body boiling calories carbolic acid carbon dioxid cargo cause cent centimeters cholera clean Clinical Cloth color contained cubic centimeters cubic meters death-rate deaths diet digestion diphtheria discharged disinfection dust Edition effects epidemic exposure filter filtration Fomites formaldehyd fresh air grams heat Hospital hygienic immunity important impurities infected infectious diseases influence inspection kilograms liters means meat Medical Medicine method milk mosquitoes nature nitrogen octavo organic matter oxygen passengers persons pipe polluted port prevent produced Professor proteid purification quarantine quarantine officer regulations removed salts sanitary scarlet fever sewage small-pox soil solution of bichlorid steam steerage substances sulphur dioxid supply surface Surgery tank temperature Text-Book tion tuberculosis typhoid fever typhus fever United vaccination vegetable ventilation vessel water-supply weight yellow fever