24 



INFUSORIA. 



CHAPTER IV. 



INFUSORIA* (Ciliated animalcules). 



RETURNING once more to our examination of the 

 drop of water which has already furnished us with 

 lessons of such interest, we find it still offering to 

 our notice animalcules widely different in their 



FlG. 12. PARAMECIUM, &C. 



structure from any that we have as yet encountered. 

 They are all of them, however, distinguishable by 

 one striking feature in their economy namely, that 



* Met with in stagnant water. 



