ABSTRACT
Many great naturalists have devoted much of their lives to the study of ants, bees, and wasps; and behavior of these insects is of the utmost interest to the psychologist, because it presents so many clear instances of the blending of Intelligence with Instinct, of undeniable Intelligence with unmistakable Instinct. Instinctive behavior is indistinguishable from intelligent behavior by any outward mark. It is true that, when the same favorable conditions of the animal and of the environment are repeated, instinctive behavior is apt to be repeated with a regularity which gives it a machinelike air. M. Henri Fabre describes how this wasp, which preys upon caterpillars, seizes her prey and, with marvellous precision, plunges her sting into the principal nerve ganglia, and thus paralyzes without killing her victim; how she then drags it to her nest and deposits her egg upon it, leaving it as a supply of fresh meat for the grub which will hatch from the egg.
