Bitterness of vegetables, M. Guillemin, xxiv, 273.
Bitumen in stones, xii, 147.
— or petroleum oil spring of Allegany Co., N. Y., xxiii, 97.
— in the valley of the Little Kenawha, xxix, 86;
valley of the Kenawha, 121;
of Sandy river, 129.
— in N. Jersey, xxxvi, 114.
— from Barbadoes, v, 406.
— of Africa, i, 147.
—, elastic, of France and England, xiv, 371.