Torrey, J., letters to, 33-45, 51, 91, 149, 287, 292, 297, 303, 307, 314, 318, 324, 327, 333, 334, 339, 343, 356, 358, 362, 369, 445, 450, 568, 577, 596, 641, 622; references to, 15, 18, 20, 29, 31, 48, 134, 405, 415, 485, 500, 514, 533, 558, 595, 601, 639, 641, 813. Torrey, Mrs., letters to, 67, 81, 152, 161, 198, 294, 300, 301, 305; references to, 30, 415. Torrey, the Misses, letters to, 153, 163. Torreya, 428, 650, 651. Townsend, 278. Traill, 759. Transport boats, articulated, 759. Treadwell, D., 27. Trécul, A., 382. Trees of North America, 362, 364, 366. Trelease, W., 782. Treveranus, 373. Tricerastes, 223. Trichomanes Petersii, 394. Trichomanes radicans, 392, 394. Trimen, 592. Trisetum Molle, 46. Trowbridge, J. F., 14, 15, 41; Letters to, 64, 65, 83. Trumbull, J. H., 745. Tuckerman, E., 27, 292, 784. Tulasne, L. R., 382, 400. Turner, Dawson, 388. Tylor, 772, 802. Tyndall, 565, 631, 805. Ungnadia, 222. United States Exploring Expedition. See Exploring. University of Michigan, 21, 76, 83, 270, 274, 282. Utica, 16, 18, 19, 29, 37. Vaccinium brachycerum, 343. Val Crucis, 309. Valentine, W., 144, 149. “Variation of Plants and Animals under Domestication,” 561. Vase presented to Asa Gray, 776. Vasey, G., 688. Vaughan, 805. Ventenat herbarium, The, 178. “Vestiges of Creation,” 328, 330, 345. Vienna, 210-223. Vienna Hofherbarium, 214, 795. Vilmorin, H. de, 721, 799. Vilmorin, L., 381, 445. Virginia, Journey to. See North Carolina. Visiani, R. de, 25, 204. Vogel, 93. Wallace, 613, 714. Wallich, N., 379. Walter, T., 134. Walter’s herbarium, 130, 136, 813. War. See Rebellion. Ward, N. B., 23, 120, 126, 132, 137, 144, 369, 370. Ward cases, 126. Wartmann, 719. Watson, S., 622, 640, 669, 694, 727, 729, 784, 787, 788, 813. Webb, P. Barker, 23, 157, 173, 382. Webb’s herbarium, 173. Wedgewood, Miss, 755. Weeds, 492. Weiss, 795. Weisner, 796. Wellingtonia. See also Sequoia, 408. Welwitschia, 541. Whipple, Charles W., 73-79. Whitney, Asa, 388. Wilkes, C., 359, 392, 622. Will, 816. Willdenow, 26; herbarium, 268, 709. Williams, S. Wells, 54. Williamson, W. C., 722, 791, 807. Willoughby, Dr., 12. Wilson (Christopher North), 100, 104. Winter, American, 739. Winthrop, R. C., 543, 700. Wislizenus, A., 351, 782. Wood, A., 334. Wright, Charles, Letters to, 352, 360, 362, 389, 405, 413, 482, 494, 516, 540, 546, 550, 554, 567, 575, 588, 616; references to, 360, 362, 390, 391, 393, 405, 406, 422, 426, 435, 441, 442, 470, 495, 515, 516, 541, 550, 568, 617, 773, 774. Wright, Chauncey, 657. Wright, G. F., Letters to, 655, 666, 684, 695. Wyman, J., 303, 327, 502, 505, 511, 550, 553, 600. Xantus de Vesey, L. J., 466. Xantus, Californian Plants, 466. Yale College Lectures, 693, 694, 699, 700. Zuccarini, J. G., 25, 234, 235, 315. Zygodon, Bones of, 303. FOOTNOTES: