The Principles of hygieneW.B. Saunders, 1901 - 495 pages |
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Page 17
... means which tend to preserve the body in a healthy con- dition , as well as those which tend to improve the general health . It embraces a knowledge of the factors and conditions which bring about ill health and disease , as well as a ...
... means which tend to preserve the body in a healthy con- dition , as well as those which tend to improve the general health . It embraces a knowledge of the factors and conditions which bring about ill health and disease , as well as a ...
Page 27
... means of avoiding or destroying them . It is not a specific department or separate branch of science , but is implied , in part , in a number of sciences , as chemistry , biology , physics , pathology , statis- tics , etc. The term ...
... means of avoiding or destroying them . It is not a specific department or separate branch of science , but is implied , in part , in a number of sciences , as chemistry , biology , physics , pathology , statis- tics , etc. The term ...
Page 34
... means of barometers . The mercurial barometer is 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 ...
... means of barometers . The mercurial barometer is 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 ...
Page 36
... means the mass of air pressing on the area below is reduced ; ( 2 ) when the air is damp , for as the density of aqueous vapor at o ° C. temperature and 760 millimeters pressure is 0.7721 , air being 1 , the mixture is lighter the more ...
... means the mass of air pressing on the area below is reduced ; ( 2 ) when the air is damp , for as the density of aqueous vapor at o ° C. temperature and 760 millimeters pressure is 0.7721 , air being 1 , the mixture is lighter the more ...
Page 38
... directly by the condensation hygrometers , or it can be calculated from the readings of the psychrometer , with the aid of tables or by means of Apjohn's formula : E elastic force of vapor corresponding to the dew - 38 AIR .
... directly by the condensation hygrometers , or it can be calculated from the readings of the psychrometer , with the aid of tables or by means of Apjohn's formula : E elastic force of vapor corresponding to the dew - 38 AIR .
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