The naturalists of yesterday and the naturalists of to-day — Natural history and the natural sciences — The theory of Evolution — The chief industries of Man — The chief industries of Animals — Intelligence and instinct — Instinctive actions originate in reflective actions — The plan of study of the various industries.

The Carnivora more skilful hunters than the Herbivora — Different methods of hunting — Hunting in ambush — The baited ambush — Hunting in the dwelling or in the burrow — Coursing — Struggles that terminate the hunt — Hunting with projectiles — Particular circumstances put to profit — Methods for utilising the captured game — War and brigandage — Expeditions to acquire slaves — Wars of the ants.

Flight — Feint — Resistance in common by social animals — Sentinels.

The preservation of the individual and the preservation of the species — Foods manufactured by the parents for their young — Species which obtain for their larvÆ foods manufactured by others — Carcasses of animals stored up — Provision of paralysed living animals — The cause of the paralysis — The sureness of instinct — Similar cases in which the specific instinct is less powerful and individual initiative greater — Genera less skilful in the art of paralysing victims.

Animals naturally provided with dwellings — Animals who increase their natural protection by the addition of foreign bodies — Animals who establish their home in the natural or artificial dwellings of others — Classification of artificial shelters — Hollowed dwellings — Rudimentary burrows — Carefully-disposed burrows — Burrows with barns adjoined — Dwellings hollowed out in wood — Woven dwellings — Rudiments of this industry — Dwellings formed of coarsely-entangled materials — Dwellings woven of flexible substances — Dwellings woven with greater art — The art of sewing among birds — Modifications of dwellings according to season and climate — Built dwellings — Paper nests — Gelatine nests — Constructions built of earth — Solitary masons — Masons working in association — Individual skill and reflection — Dwellings built of hard materials united by mortar — The dams of beavers.

General precautions against possible danger — Separation of females while brooding — Hygienic measures of Bees — Prudence of Bees — Fortifications of Bees — Precautions against inquisitiveness — Lighting up the nests.

Degree of perfection in industry independent of zoological superiority — Mental faculties of the lower animals of like nature to Man’s.