It was also shown that animals may become infected through the faeces of a flea which has been fed on plague-infected rats.
(I) In the former class the eggs are extruded with the faeces, and the young become fully formed within the egg, and when accidentally swallowed by their host are liberated by the solvent action of the gastric juice and complete their development.
with the faeces of the host the larva hatches out and swims freely for a time.
Discharges - vomited matters, sputa, urine and faeces - are possible media by which plague is spread from person to person.
Haematemesis is vomiting of blood, the colour of which may be altered by digestion, as is also the case in melaena, or passage of blood with the faeces, in which the blood becomes dark and tarrylooking from the action of the intestinal fluids.