—, land, in the United States, mode of conducting, E. F. Johnson, xix, 131.
—, geological, see [Geological.]
—, canàl, in New York, xxiv, 19.f
Surveying, an improvement suggested by E. Wright, xxii, 74.f
—, field, improvement in, xxiii, 37.f
— instruments, on their improvement, L. Lyon, xiv, 268.f
Surveyor's compass, improvements in, T. Kendall, xix, 337.f
Sus, species of, see [Zoology.]
Sussex, Duke of, notice of N. Bowditch by, xxxvi, 214.
Sussex County, England, number of fossils of, xxiii, 171.