This chapter is divided into (1) knotted cords and objects tied; (2) notched or marked sticks; (3) wampum; (4) order of songs; (5) traditions; (6) treaties; (7) appointment; (8) numeration; (9) accounting. SECTION 1. KNOTTED CORDS AND OBJECTS TIED. Dr. Hoffman reports a device among the Indians formerly inhabiting the mountain valleys north of Los Angeles, California, who brought or sent to the settlements blankets, skins, and robes for sale. The man trusted to transport and sell those articles was provided with a number of strings made of some flexible vegetable fiber, one string for each class of goods, which were attached to his belt. Every one confiding an article to the agent fixed the price, and when he disposed of it a single knot was tied to the proper cord for each real received, or a double knot for each peso. Thus any particular string indicated the kind of goods sold, as well as the whole sum realized for them, which was distributed according to the account among the former owners of the goods. Mr. George Turner (_a_) says that among the South Sea Islanders tying a number of knots in a piece of cord was a common way of noting and remembering things in the absence of a written language. A peculiar and ingenious mode of expressing thoughts without pronouncing or writing them in language is still met with among the Indian shepherds in the Peruvian Cordilleras, though it is practiced merely in the accounts of the flocks. This system consists of a peculiar intertwining of various strings into a net-like braidwork, and the diverse modes of tying these strings form the record, the knots and loops signifying definite ideas and their combination the connection of these ideas. This system of mnemonic device, which was practiced by the ancient Peruvians, was called quipu, and, though a similar knot-writing is found in China, Tartary, eastern Asia, on many islands of the Pacific, and even in some parts of Africa, yet in Peru, at the time of the Incas, it was so elaborately developed as to permit its employment for official statistics of the government. Of course, as this writing gave no picture of a word and did not suggest sounds, but, like the notched stick, merely recalled ideas already existing, the writing could be understood by those only who possessed the key to it; but it is noteworthy that when the Jesuit missions began their work in Peru they were able to use the quipus for the purpose of making the Indians learn Latin prayers by heart. A more detailed account of the ancient quipu is extracted from Dr. von Tschudi’s Travels in Peru (_a_) with condensation as follows: