In other cases the infection of the first host is brought about by the ingestion FIG.
The increased ingestion of bacteria in active immunity would seem to depend upon the presence of immune opsonins in the serum.
Heusinger has shown that white sheep and pigs are injured by the ingestion (A) N b X N ?--,r N(A)+N of certain plants, while the pigmented individuals may eat them without harm.
The other plan is to use an exclusively meat diet, combined with the ingestion of a large quantity of hot water, so as to cause free elimination.
In three of them at least - the whey cure, the grape cure and the meat cure-a diminution in one or other of the solid constituents of food is associated with the ingestion of an unusually large quantity of water.