Men began to pass beyond it when they discovered how to catch fish and how to use fire. They could then begin (following coasts and rivers) to spread over the earth. The middle status of savagery, thus introduced, ends with the invention of that compound weapon, the bow and arrow. The natives of Australia, who do not know this weapon, are still in the middle status of savagery.[25] [Footnote 25: Lumholtz, _Among Cannibals_, London, 1889, gives a vivid picture of aboriginal life in Australia.] [Sidenote: Upper status of savagery.] The invention of the bow and arrow, which marks the upper status of savagery, was not only a great advance in military art, but it also vastly increased men's supply of food by increasing their power of killing wild game. The lowest tribes in America, such as those upon the Columbia river, the Athabaskans of Hudson's Bay, the Fuegians and some other South American tribes, are in the upper status of savagery. [Sidenote: Lower status of barbarism: it ended differently in the two hemispheres.] The transition from this status to the lower status of barbarism was marked, as before observed, by the invention of pottery. The end of the lower status of barbarism was marked in the Old World by the domestication of animals other than the dog, which was probably domesticated at a much earlier period as an aid to the hunter. The domestication of horses and asses, oxen and sheep, goats and pigs, marks of course an immense advance. Along with it goes considerable development of agriculture, thus enabling a small territory to support many people. It takes a wide range of country to support hunters. In the New World, except in Peru, the only domesticated animal was the dog. Horses, oxen, and the other animals mentioned did not exist in America, during the historic period, until they were brought over from Europe by the Spaniards. In ancient American society there was no such thing as a pastoral stage of development,[26] and the absence of domesticable animals from the western hemisphere may well be reckoned as very important among the causes which retarded the progress of mankind in this part of the world. [Footnote 26: The case of Peru, which forms an apparent but not real exception to this general statement, will be considered below in chap. ix.] [Sidenote: Importance of Indian corn.]