ACA1UNA. 



C35 



Fig. 290. Porwite*. Acariva. 



1. Louse. Human ; magnified 50 diameters. 2, Acarut dometticus, Choese- 

 ilite^ under surface. 3, Acanu Scabiti, Itch-Insect; magnified 850 dia- 

 meters. 4, Entozoon folliculorum, Grub from the human skin In various 

 twees of existence, from the egg upwards : magnified 350 diameters. (The 

 email circles near represent the objects about the natural size.) 



