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 Neuroptera; 5, a grasshopper 

 illustrating Orthoptera; 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. 



