CONTENTS. XV 



CHAPTER VI: Avenues of Exit of Infectious Agents 



AND Parasites from the Body 151 



Expectoration and nasal secretions, 155 — Feces, 156 — 

 Urine, 160 — Skin, 161 — Blood through bites of insects, 

 162 — Suppurations, 164. 



CHAPTER VII: Portals of Entry of Infectious 



Agents and Parasites into the Body 166 



Through wounds of skin and mucous membranes, 173 — 

 By mouth and nose through air, 173 — By mouth through 

 food and water, 175 — By genito-urinary tract, 181 — By 

 placenta, 182 — Cryptogenic (unknown entrance), 183. 



CHAPTER VIII: Portals of Entry and Avenues of 

 Exit of Micro-organisms in the Various Diseases. 184 

 Actinomycosis, 184— Anthrax, 185— Bubonic plague, 186 

 — Epidemic cerebro-spinal meningitis, 188 — Chicken-pox 

 (varicella), 188— Cholera, 189 — Dengue, 190— Diphtheria, 

 190— Dysentery (amoebic), 192— Dysentery (bacillary), 

 192 — Erysipelas, 193 — Glanders, 194 — Gonorrhoea, 195 — 

 Hydrophobia, 196 — Influenza, 197 — Leprosy, 197 — Ma- 

 dura foot, 198— Malarial fever, 198— Measles, 199 — 

 Mumps, 200 — Pneumonia, 200 — Relapsing fever, 201 — 

 Rubella, 202 — Scarlet fever, 202 — Small-pox, 207 — Epi- 

 demic stomatitis, 205— Syphilis, 206— Tetanus, 207— 

 Tuberculosis, 208 — T>3)hoid fever, 209— Whooping- 

 cough, 212 — Yellow fever, 212. 



CHAPTER IX: Disinfectants and Disinfection 214 



Purpose of, 214 — Heat, 216 — Gaseous disinfectants, 218 

 — Chemical disinfectants, liquids, 219 — Bichloride of 

 mercury, 221 — Formalin, 222 — Carbolic acid, 222 — 

 Tricresol, 223— Milk of lime, 224— Chloride of lime, 224. 



