Haywood, Hakluyt, Tonti, Bartram, Adair, and others mention the use of shells for drinking vessels, and in much more recent times Indians are known to have put them to a similar use. On account of the rapidity with which they decay, we can know nothing of surface deposits of shells by prehistoric or even by comparatively recent peoples. It is only through the custom of burying valued articles with the dead that any of these relics are preserved to us. When we consider the quantity of such objects necessarily destroyed by time, exposure, and use, we marvel at the vast numbers that must have been, within a limited period of years, carried inland. In the more recent mounds there may be found specimens obtained by the Indians through the agency of white traders, but the vast majority were derived doubtless from purely aboriginal sources. Many instances could be cited to show that the whites have engaged in the trade in shells. Kohl, in speaking of early trade with the Ojibways of Lake Superior, states that when the traders "exhibited a fine large shell and held it to the ears of the Indians, these latter were astonished, saying they heard the roaring of the ocean in it, and paid for such a marvelous shell furs to the value of $30 or $40, and even more."[5] Cabeça de Vaca[6] traded in sea-shells and "hearts" of sea-shells among the Charruco Indians of the Gulf coast nearly three hundred and fifty years ago. The form of vessel of most frequent occurrence is made by removing the whorl, columella, and about one-half of the outer shell of the large univalves. The body of the lower whorl is cut longitudinally, nearly opposite the lip and parallel with it. The spire is divided on the same plane, a little above the apex, giving a result well illustrated in Fig. 1, Plate XXII. A very convenient and capacious bowl is thus obtained, the larger specimens having a capacity of a gallon or more. The work of dividing the shell and removing neatly the interior parts must have been one of no little difficulty, considering the compactness of the shell and the rudeness of the tools. For nomadic peoples these vessels would have a great superiority over those of any other material, as they were not heavy and could be transported without danger of breaking.