TITLES. 
Echin. 21 
(217), Polara (220), Schmidt (246), Smiroth (256), Spaulding 
(263), Ziegler (298). 
[LUDWIG, H.] See also : — Ackermann, A., Ariola, V., Barthels, 
P., Bell, F. J., De Meijere, J. C. H., Enriques, P., Fuehner, H., 
Fuerth, O. von, Grave, C., Grieg, J. A., H^rouard, E., 
Koehler, B-., Ostergren, H., Perrier, R., Rankin, W. M., 
Russo, A., Theel, H. 
167. *LUKAS, F. Psychologie der niedersten Thiere. Eine Unter- 
suchung fiber die ersten Spuren psychischen Lebens im Thierreiche. 
276 pp., 34 text-figg. Wien & Leipzig. [ii, c, vi.] 
Abstract by P. Mayer, Zool. Jahresber. 1904 (Aug. 1905). 
168. LUPI, A. Fauna miocenica presso Tagliacozzo. Boll. Soc. geol. 
Ital. xxiii, pp. xxviii-xxix. (10 May.) [iii, b, ii, d.] 
LUTHER, D. D. See Clarke, J. M. (40). 
169. LYON, E. P. Rhythms of C0 2 production during cleavage. Science 
(n. s.), xix, pp. 350-353. (26 Feb.) [n, f, iv, c.] 
Abstract in Ludwig (166). 
170. . A Biological Examination of Distilled Water. Biol. Bull vi, 
pp. 198-202. (March.) [ii, e, i, b.] 
171. . Rhythms of susceptibility and of carbon dioxide production 
in cleavage. Amor. J. Physiol, xi, pp. 62-58. (1 April.) 
Abstract in Ludwig (166). [ii, f, viii.] 
MAAS, O. See Boveri, T. (31), Driesch, IJ. 
172. MACBRIDE, E. W. The early stages in the development of 
Ophiothrix fragilis. Amer. Natural, xxxviii, pp. 508-511, 5 text- 
figg. (Aug.) [n, F, iv.] 
Abstract in Ludwig (166). 
MacCALLUM, J. B. See Loeb, J. (159). 
173. M’CLURE, W. F. Starfish and their injuries. Scient. Amer. xc, 
p. 98, text-figg. (30 Jan.) [ii, d, vii, d.] 
174. McINTOSH, D. C. On the Echinodermata of the Firth of Clyde 
and variation in Ophiocoma nigra. Rep. Brit. Ass. 1903, pp. 696- 
697. (Aug.) [hi, a, ii.] 
An Abstract, mainly of McIntosh (212) Zool. Rec. 1903. 
175. MADER, C. Recherches sur les propridtks hypnotiques des couleurs 
d’aniline en general et du bleu de m^thylkne en particulier. Bull. 
Soc. zool. France, xxviii, pp. 204-210. (1903.) [ii, e, i, a.] 
176. MADSEN, Y. On Jurassic fossils from East Greenland. Medd. 
Gronland, xxix, pp. 157-210, pis. vi-x, 1 map. Translated by Ethel 
G. Skeat. [iii, b, iii, c, 3.] 
177. . Nils Olof Holst : Kvartar-studier i Danmark och norra Tysk- 
land. Geol. Foren. Stockholm Forh. xxvi, pp. 433-452. En kritisk 
Anmeldelse. Geol. Foren. Stockholm Forh. xxvi, pp. 529-534. 
Criticism of Holst’s paper. [ii, b, ii, b.] 
178. MAIRE. V. Coupe du Rauracien inf^rieur prise au Prelot dans la 
tranchde de la route de Champlitte & Talmay. Bull. Soc. Grayloise 
d’fimul. vii, pp. 161-167. [n, d, x. iii, b, iii, c, 2.] 
179. MALARD, A. E. Des variations mensuelles de la faune et de la 
flore maritimes de la baie de la Hougue (janvier et fevrier). Bull. 
Mus. Paris, 1902, pp. 190-197. (1902.) [ii, f, iv, e. iii, A, ii.] 
180. . Sur un Lamellibranche nouveau, parasite des Synaptes. 
Bull. Mus. Paris, 1903, pp. 342-346. (1903, ? 1904.) (ii, d, viii, b.] 
