640 



THE MICROSCOPE. 



j. rey. 2. The parasites of the human body confine them- 

 selves strictly to particular regions ; when they are found 



Fi<r. 29+. 

 1, Parasite of Turkey. 2, Acarus of common Fowl, under surface. 3, Parasit6 

 of Pheasant. (The small circle encloses each about life size.) 



elsewhere, it is the result of accident. Thus, the Pediculi 

 capitis live in the head; P. vestimenti, upon the surface of 

 the body; the P. tabescentium, on the bodies of those dying 

 of marasmus ; and the P. inguinalis, about the groins, arm- 



