Chapter Iv.--the Insect As Man's Auxiliary.

The want of insect-labour induced the potato disease, 165 Such is the dictum of an author, who thinks that the multiplication of small birds has been destructive to insect-life; but no such multiplication of birds has taken place, nor any such destruction of insects, 165, 166 The Bird and the Insect are the joint purifiers of creation, 167 Some species of insects should be carefully preserved, 167 A sketch is given of their multifarious labours, 168 Of the services rendered by the scavenger-insects, 169

Of the value of certain insects as food, 170 As, for instance, in the case of the locust, 171 The law of retaliation illustrated, 172