[268] [Cape Cod, pp. 109, 110; Riv. 129.]
[269] [See Cape Cod, pp. 97, 98; Riv. 115.]
[270] The nidus of the animal of Natica,—cells with eggs in sand.
[271] [Cape Cod, pp. 109, 110; Riv. 129.]
[272] [Cape Cod, pp. 68, 69; Riv. 79.]
[273] [Cape Cod, pp. 141, 142; Riv. 168, 169.]
[274] [Marston Watson, Thoreau’s friend and correspondent. See Familiar Letters, passim, and especially note to letter of April 25, 1858.]
[275] [Sir Charles Lyell, A Second Visit to the United States.]
[276] [Excursions, pp. 329, 330; Riv. 405. See also [pp. 383-385] of this volume.]
[277] [Excursions, p. 327; Riv. 402.]