794 



INDEX. 



Tenon, 757. 



Thaver, Nathaniel, promotes Bra- 

 zil expedition, 625, 632, 751. 



Tiaropsis, 494. 



Ticknor, 459. 



Tiedemann, Professor, 21, 29, 148; 

 invites Agassiz to Heidelberg, 

 211. 



Torre}', Professor J., 416, 437. 



Tortugas, 486. 



Trettenbach, 87. 



UNITED STATES, first thought of 

 visiting, 355 ; idea given up, 

 363 ; resumed, 377 ; departure 

 for, 398; impressions of, 432, 

 434; scientific men, 436-438. 



United States Coast Survey, 422, 

 455, 651, 653, 655; steamer 

 " Bibb," 453, 455; constant con- 

 nection with, 455; examination 

 of Florida reefs, 480, 482; dredg- 

 ing expedition, 671. 



United States Museum of Natural 

 History, 421. 



VALENCIENNES, 562. 

 Vallorbe, 36. 

 Valparaiso, 759. 

 Vanuxem, 424. 



Vienna, visit to, 130, 132. 

 Viescher Glacier, cave of, 324. 

 Vintage in Switzerland, the, 8. 

 Vogt, Karl, 282, 300, 320. 

 Volcanic islands, 760-7ti3. 

 Volcanic soil, 749 ; boulders, 757. 



WAHREN, 299, 303, 327. 



Wagler, 90, 150. 



Wagner, 72, 643, 683. 



Walther, 644. 



Waltl, 90. 



Washington, 420, 421, 422. 



Weber, J. C., 92. 



West Point, 426. 



White, W., 692. 



Whymper collection, 660. 



Wild, Mr., 351. 



Wilder, B. G., 772. 



Wilkes Exploring Expedition, 421, 



438; collection. 421. 

 Wyman, J., 437, 458. 

 Wyman, Dr. Merrill, 782. 



YANDELL, 522. 



ZOSTERA MARINA BED, 449. 

 Zuccarini, 52, 150, 643. 

 Zurich, 15, 16, 147; professorship 

 offered, 513. 



