xiv I N 



Traite de cytologic, by Prenant, 541 

 Trdmne eines Geistersehers, by Kant, 2.70 

 Treatise of Comparative Embryology, by Balfour, 



531 

 Trembley, Abraham, Swiss naturalist, 131, 



^33. M4 



Treviranus, Ludolf Christian, German botan- 

 ist. 390. 396 



Trithemius, alchemist and mystic, 131, 133 



Tschermak, 591 



ijber das Organ der Seek, by Sommerring, 



..310 

 tjber den Bildungstrieb, physiological work by 



Blumenbach, 308 



Uber die Aufgabe der Naturgeschichte, by Nageli, 



..553 

 ijberdie Erhaltung der Kraft, by Helmholtz, 409 



Uber die Grenzen des Naturerkennens, lecture by 



Du Bois-Reymond, 41^ 

 Uber die Morphologic der wirbellosen Tiere, zo- 

 ological work by Leuckart, 411 

 Uber die ruckschreitende Metamorphose der Tiere, 



anatomical treatise by Rathke, 367 

 Uber die Spiraltendenz. der Vegetation, by Goethe, 



184 

 Uber die Verjiingung in der Natur, work on 



morphology by Braun, 551 

 iJber Entwicklungsgeschichte der Tiere, by von 

 __Baer, 363, 364 



Uber Germinalselektion, by Weismann, 567 

 Uber Muskelkorperchen und was man eine Zelle ZM 



nennen hahe, essay by Schultze, 404 

 Uexkiill, Jacob von, 612. 

 Uhlenhuth, Paul, German biologist, 598 

 Universities, founding of, 76, 77; status in 



17th and i8th centuries, 142. 

 Untersuchungen Uber tierische Electrizitdt, by Du 



Bois-Reymond, 411 

 Untersuchungen zttf Morphologic und Systematik 



der Vogel, by Fiirbringer, 503 

 Untersuchungen zur vergleichenden Anatomic der 



Wirbeltiere, by Gegenbaur, 500 

 Utilitarianism, philosophical system, 446 



Valdivia expedition, 559 



Van Beneden, Edouard, Belgian biologist, 534- 



536, 543 

 Van Helmont, Jean Baptiste, Belgian scientist, 



138-140, 141, 180, 188, 2.07, 2.54, z69, Z79, 



430 

 Van t'HofF, 595 

 Vandelaar, artist, 158 

 Variation, 467 



Varolio, Costanzo, anatomist, 106 

 Vascular system, discovered, 143 



DE X 



Vegetable Staticks, botanical work by Hale, 2.19, 



^-53 

 Vererbungslehre, monograph by Plate, 573 

 Vergleichende Osteologie, by Pander, 368 

 Versuch, die Metamorphose der Pflanzen xu erklaren, 



by Goethe, i8i 

 Verworn, Max, German biologist, 603-605, 



607 

 Vesalius, Andreas, professor of medicine, loi- 



104, 137, 142., 145, 172., 138, 158, 2.80 

 Vesling, Johann, anatomist, 143 

 Vieussens, Raymond, French physician, 150 

 Vilmorin, Louis Leveque de, French scientist, 



584 

 Vincentius Bellovacensis, Vincent of Beauvais, 



medieval scholar, 80 

 Virchow, Rudolf Ludwig Carl, 307, 388, 402.- 



404, 415, 499, 505, 508, 52.1, 52.Z 



Vitalism, modern theory of, 603 



Vogt, Karl, German scientist, 451, 452., 506, 



511, 603 

 Voltaire, Frangois Marie Arouet de, 130, 131, 



2-15. 3^9 

 Von der Erhalticng der Kraft, essay on energy 



by Helmholtz, 408 



Wagner, Rudolf, German physiologist, 411, 



450. 451 

 Waldeyer, 405, 536 

 Wallace, Alfred Russell, English biologist, 



485-488, 588 

 Warming, Eugen, Danish scientist, 561 

 Wasmann, Erich, psychologist, 600, 608 

 Wedel, G. W., instructor at Jena, 176 

 Weismann, August, German biologist, 563- 



568, 573. 575. 579. 580. 585> 601 

 Werden der Organismen, Das, by Hertwig, 470, 



568 

 Werner, Abraham Gottlob, German geologist, 



453.455 

 Wharton, Thomas, English physician, 148, 156 



Wiedersheim, Robert, German anatomist, 519 



Wiesner, Julius, Austrian botanist, 577 



Wigand, Albert, German botanist, 483 



Wilberforce, S., Bishop of Oxford, attacks 



Darwinism, 481 

 Willis, Thomas, professor of medicine, 148- 



150, 161 

 Willughby, Francis, pupil and benefactor of 



Ray, 199, loi, 102. 

 Wilson, Edmund Beecher, American biologist, 



581. 59^ 

 Winkler, Hans Karl Albert, German botanist, 



577 

 Winslow, Jacob Benignus, Danish anatomist, 



302. 



