[Frederic Shonnard & W.W. Spooner (1900)] said that they used fish for fertilizing the soil, but this use must have been on an extremely limited scale. The extent and character of the trade relations between the Indians of the same tribe and those of different tribes can only be inferred from known facts which render it unquestionable that such relations existed For instance, tobacco, which was in universal use among the aborigines of North America, had to be obtained by exchange m all localities unadapted by climate and soil to its growth. The cop-per ornaments remarked by Hudson on the persons of the Indians BELT <>K WAMPUM. 44 HISTORY OF WESTCHESTER COUNTY whom lit-met in New York Bay must have been wrought out of metal obtained by barter or capture from distant parts of the country, since no deposits of native copper exist in this region. And Indian relics of various kinds are constantly found which bear no connection to the prevailing remains of the locality where discovered, but on the other hand are perfectly characteristic of other localities. For purposes of exchange, as well as for ornament, the Indians used wampum, a name given to a certain class of cylindrical beads, usually one-fourth of an inch long and drilled lengthwise, which were chiefly manufactured from the shells of the common hard-shell (dam ( \rnus mercciiuria).