Licence: Public Domain Mark
Credit: Hygiene / by J. Lane Notter and R.H. Firth. Source: Wellcome Collection.
Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.
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![D D-TRAP, 209 Dairies, regulations regard- ing, 409 , -n 1 , cowsheds and milksliop order, 409 Damp-proof course, 193 Death, causes of, 366 , registration of, 359 Death-rates, 359 according to age periods, 361 , birth-rates in relation to, 365 , calculation of, 359 of children, 363 combined, 364 corrected, 361 , density of population and, 365 , gross, 359 , sex in relation to, 361 , standard, 361 Deficiency of food, effects of. Definitions, sanitary, 381 Density of population, 365 Deodorants, 292 Dew, formation of, 324 point, estimation of, 325 Dextrose, 116 Diarrhoea, epidemic, 272 , soil relation to, 272 , water relation to, 79 Diastase, 170 Diets, 123 , calculation of, 128 , general principles of, 123 , mixed, need of, 129 , relation to sex, age, work, climate, 126 , standard, 125 Diffusion of air, 10 Digestibility of food, 130 Diphtheria, 274 Diseases attributable to food, 136 , infectious, 261, 415 , notification of, 289, 420 , zymotic, 263 Disinfection, 292 of bedding and clothes, 293 by chemicals, 295 by dry heat, 293 of rooms, 296 by steam, 293 , compulsory, 415 Distillation of sea-water for drinking, 84 District Councils, 379 / lochinius duodcnalis, 303 Drainage of houses, 229 of subsoil, 190 byelaws as to, 394 Drains, construction of, 229 , definition of, 229, 382 , disconnection from the house, 231 , examination of, 237 , fall of, 232 EXT Drains, flushing of, 232 , legislation relating to, 391 , trapping of, 234 , ventilation of, 233 Draughts, velocity of, 32, 37 Dry heat, disinfection by, 293 ■ method of removing ex- creta, 217 ■ rot, 199 Dryness of wines, 180 Dust-bins, 220, 396 ]-)ust in the air, 16 Dwellings for artisans, 207 , construction of, 193 , drainage of, 229 Dysentery, its relation to water, 79 Earth closets, 218 byelaws, as to, 393 Earih temperature, 186 Eating, 247 Echinococcus disease, 307 Eggs, 145 Electrical treatment of sewage, ^■ts . ■„ • Electncity as an illuminant, 28 Elephantiasis, 303 Energy, food from, 121 , origin and varieties of, 118 Enteric fever, 276 , ground-water and, 277 , milk and, 148, 277 , sewer gas and, 277 , water and, 80, 277 Entozoa and drinking water, 81 Epidemic diarrhoea, 272 Ergot, test for in flour, 157 Error, law of, 376 , mean, 376 , mean square, 376 ■ , probable, 377 , statistical series of, 375 Erysipelas, 278 Euthermic stove, 51 Evaporation, 329 Excess of food, effects of, 136 Excreta, amount of, 228 , composition of, 228 , disposal of, 227 , removal of, 227; by Berlier system, 239 ; by diy system, 217, 246; by Lier- nur system, 238; by sepa- rate system, 237 ; by Shone system, 239; by water system, 229 Exercise, 257 , amount to be tal<en, 259 , calculation of work, 260 Expansibility of the air, 8 Expectation of life, 373 Expired air, 20 Extraction, ventilation by, 45 FRY FactorII-s, ventilation of, 47 Factors, table of, 425 Famine fever, 280 Fans, ventilation by, 46 Farcy, 140 Farr's formula for expectation of life, 374 life-table, 371 Fats, 114 Favus, parasite of, 299 Feathers, 252 Fermentation, 169 FTozone, 242 FtiTous sulphate as a disin- fectant, 296 in treatment of sewage, 242 Fever, enteric, 276 , famine, 280 , puerperal, 278 ——, relapsing, 280 , scarlet, 280 , simple continued, 281 , typhoid. Sec Enteric fever , typhus, 288 , yellow, 289 Fiducial point, 337 Filaria sanguinis hoiniiiis, 302 Filaria incdincnsis, 302 Filter-beds, 83 , action of, 84 Filters, 84 Filtration of sewage, 244 of water, 82 Pish, 144 , characters of fresh, 145 , preservation of, 14s when in season, 144 Flap-trap, 235 Flax, 254 Floor space in hospitals, 223 ; in schools, 221 Floors, 199 Flour, 154 Flush-closets. See Slop-closets tanks, 232 Food, III , accessory, 163 .Vdulteration Act, 412 , amount required, 125 , classification of, 111 , composition of, 127 , cooking of, 131 , deficiency of, 137 , digestibility of, 130 , diseases due to, 136 ——, energy from, 121 , excess of, 136 , huurs for eating, 130 , nutritive value of, 118 —-, unsound, law relating to, , vegetable, 152 Foot-and-mouth disease, 140 Forecasting of weather, 343 Foriin's barometer, 336 Friction in ventilation, 37 Frying, 136](https://iiif.wellcomecollection.org/image/b21509979_0445.jp2/full/800%2C/0/default.jpg)
