RELATION TO ANIMAL KINGDOM 19 



Fig. 4. — The orders of insects: i, a bristle tail and 2, a spring tail, are Thysa- 

 nura; 3, a dragon fly and 4, a Psocid, illustrating Ncuroptera; $, a grasshopper, 

 illustrating Orihoptera; 6, a shield bug represents Hemiptera; 7, a ground 

 beetle shows Coleoptera; 8, a butterfly, illustrating Lepidoptera; 9, a horse-fly 

 represents the Diptera, and 10, a bumble-bee, the Hymenoptera. 



