ABSTRACT
Instincts comparable with habits, but different in their originInstincts graduated—Aphides and ants—Instincts variableDomestic instincts, their origin—Natural instincts of the cuckoo, ostrich, and parasitic bees— Slave-making antsHive-bee, its cell-making instinct— Difficulties on the theory of the Natural Selection of instincts—Neuter or sterile insects—Summary.
