CHAPTER V.

PARASITES.

Distinction between Parasites and Carnivora--Parasites found on all Classes of Animals--Males dependent on Females--Parasites on Man--Abundant Parasites in Stork-- All the Organs nourish Parasites--Different size of Male and Female--Lerneans--Diplozoa--Migration of Parasites--Corresponding Changes of Form--Parasites restricted to certain Regions--Former Theory of Spontaneous Generation 85