40 Gen. Suh. 
I. GENERAL SUBJECTS. 
766. Whipple, G. C. Biological studies in Massachusetts. Arner. 
Natural, xxxi, pp. 503-508, 2 pis., 576-581, 1016-1026. 
767. Whitman, 0. O. The centrosome problem and an experimental test. 
Science, v, pp. 235 & 236. 
768. W iedersheim, R. & Parker, W. N. Elements of the comparative 
anatomy of vertebrates, adapted from the German of Dr Robert 
Wiedersheim. Second edition, founded on the third German edition. 
8vo, London, xvi & 488 pp., 333 figg. 
769. Wiesner, J. Note sur la thdorie des plasomes. Annee biol. i, 
pp. 676-678. 
Reponse A la note prdcddente by Yves Delage, T. c. pp. 678-680. 
770. Wilcox, E. Y. Chromatic tetrads. Anat. Anz. xiv, pp. 194-198. 
771. Wilder, H. H. On the disposition of the epidermic folds upon the 
palms and soles of Primates. Anat. Anz. xiii, pp. 250-256, 7 ligg. 
Cf. Hepburn, D. Note on the above paper, t. c. pp. 435-437. 
772. Willey, A. Zoological observations in the South Pacific. Quart. J. 
Micr. Sci. xxxix, pp. 219-231, 1 pi. 
Variation. 
773. Williams, II. S. On the theory of organic variation. Science, vi, 
pp. 73-85. 
774. Wilson, C. W. Experiments on the early development of the 
amphibian embryo under the influence of Ringer and salt solutions. 
Arch. Entwickmech. v, pp. 615-648, 2 pis. 
775. WirIsn, A. Ueber die Selbstverstiimmolung bei Carcinus mamas. 
Eestschr. Lilljoborg, 1896, pp. 303-316. 
776. Wolff, G. Zur Histologie der Hypophyse des normalen und 
paralytischen Gehirns. Verh. Ges. Wurzburg, xxxi, pp. 223-235. 
777. Woodward, A. Smith. Edward Drinker Cope. Nat. Sci. x, pp. 377- 
381, with portrait. 
778. Wundt, W. Vorlesungen fiber die Menschen- und Thicrseelc. 
3 umgearb. Aufl. 8vo, Hamburg and Leipzig, xii & 519 pp. 
779. Yasuda, A. On the accommodation of some Infusoria to the solu- 
tions of certain substances in various concentrations. Annot. Zool. 
Japon. i, pp. 23-29. 
780. Y ung, E. Les diverses directions des recherches zoologiques. Rev. 
Scient. viii, pp. 673-678. 
781. Zacharias, H. C. E. Die Phylogenese der Kopfschilder bei den 
BQiden. Zool. Jahrb. Syst. x, pp. 56-90, 4 pis., 3 figg. 
Variability, &c. 
782. *Zacharias, O. Neue Beitriigo zur Kcnntniss des Susswasserplank- 
tons. Forschber. Biol. Stat. Plon, v, pp. 1-9, 1 pi. 
783. Zander, E. Vergleiche und Untersuchungen zum Verstiindnisse der 
Jodreaktion des Chitins. Arch. ges. Physiol, lxvi, pp. 545-573. 
784. *Zoja, R. Stato attuale degli studi sulla fecondazione. Dissertazione 
di libera docenza. Boll. Scient. xviii, pp. 90-128 and xix, pp. 4-30, 
37-56, 65-74, 106-124. 
