TITLES. SUBJECT-INDEX. Ccel. 15 
226. Williams, R. P. Southport Meeting of the British Association. 
Science xviii. [ Coelenterata , pp. 325 & 326.] 
227. Wilson, E. B. , Notes on merogony and regeneration in Renilla. 
Biol Bull, iv, pp. 215-226, 4 figg. 
228 . Wollemann, A. Die Fauna der Luneburger Kreide. Abh. Preuss. 
geol. Landesanst. xxxvii, 129 pp. 
Wood, Ethel M. R. [See Elles & Wood (59).] 
229. Yerkes, R. M. A study of the reactions and reaction time of the 
Medusa Gonionema murbachvi to photic stimuli. Amer. J. Physiol, 
ix, pp. 279-307. 
230. Zacharias, O. Mittheilungen uber das Plankton des Achensees in 
Tirol. Biol. Centrbl. xxiii, pp. 162-167. 
231. ZahXlka, C. ix. Zone der bohm. Kriedeformation aus dem 
Isergebiete. SB. Bohmisch. Ges. 1903, ii, No. 32, 157 pp., 1 pi. 
232. £elizko, J. V. tJber das neue Yorkommen einer untersilurischen 
Fauna bei Lhotka (Mittelbohmen). Verb. geol. Reichsanst. 1903, 
pp. 61-65. 
233. Ziegler, H. E. Experimentelle Studien uber die Zelltheilung. 
Arch. Entwickmech. xvi, pp. 155-175, 30 text-figg. * 
234. Zykoff, W. Material po faunye Yolghi i ghidrofaunye Saratovskoi 
ghuo. Bull. Mus. Moscou 1903, 1, pp. 1-149. [In Russian.] 
I. GENERAL 
(i.e. works relating to Coelenterata generally). 
[The following memoirs refer to Coelenterata generally : — Adams, Girty 
& White (1), Barfurth (7 & 8), Beede (10), Blanckenhorn (16), Browne 
(22), Calvin (24), Cleland (28), Davenport (37), Goette (83), Gorich 
(88 & 89), Hertwig (106), Knudsen (122), Korschelt & Heider (123), 
Kulczycki (127), LAng (129), Leon (131), Lo Bianco (132), Mudge (155), 
Ostwald (164), Pearcey (165a), Perrier (169), Pratt (174), Riggenbach 
(183), Romer (185), Rowe (188), Schardt & Dubois (191), Todd (205), 
Udden (210 & 211), Yolk (220), Williams (225), Zacharias (230).] 
SUBJECT INDEX (to General). 
General Biology. 
Text-books, including Coelenterata, Goette (83), Hertwig (106), Kor- 
schelt & Heider (123), Mudge (155), Pratt (174). 
Methods of preservation, Lo Bianco (132). 
Regeneration and involution, Barfurth (7 & 8). 
Trophocoele-theory discussed (monograph), Lang (129). 
Spermatogenesis in Coelenterata , Gorich (88 & 89). 
Systematic position of Prophysema haechelii , Leon (131). 
tTerminology ; correlation of geological faunas, Williams (225). 
f Refers to fossil forms. 
