TITLES. 
Gen. Sub. 29 
435. Lehmann, A. Sur la nature de l’activite des nerfs. Ov. Danske 
Selsk. 1903, pp. 205-233. 
436. . Ueber die Natur der Nerventhatigkeit. Arch. ges. Physiol. 
xcvii, pp. 148-170. 
Leiber, A. [See Neidert & Leiber (533).] 
437. Lendenfeld, R. von. Variation und Selektion. Eine Kritik der 
Grunde, die Wettstein fiir die Vererbung itidividuell erworbener 
Eigenschaften vorbringt. Biol. Gentrbl. Xxiii, pp. 489-500 & 563-570. 
438. Lenhossek, M. von. [Determination of sex, vide Zool. Rec. xxxix, 
Gen. Sub. (489).] Summary by A. Putter, Zool. Zentrlbl. x, pp. 69- 
71. 
439. Leon, N. Istoria natural^ medical# a poporulul rom#n. An. Ac. 
Romane, Ser. 2, xxv, Sect. Sci., 160 pp. [Separate copy.] 
440. Lepeschkin, W. W. Zur Kenntnis der Erblichkeit bei den einzel- 
ligen Organismen. Centrbl. Bakter. 2 Abt. x, pp. 145-151, 1 pi. 
Chiefly phytological. 
441. *Lesbre, F. & others, filaments d’histologie et de technique micro- 
scopique. 2 e Edition, entikrement refondue du “Cours 41^mentaire 
d’anatomie g4n£rale.” Paris, 1903, 8vo, ix + 631 pp. [From Zool. 
Anz. Bibl. xxvii, p. 162.] 
442. Lesshaft, P. Die Bestimmung der Funktion der Muskeln. Anat. 
Hefte Arb. xxi, pp. 29-59. 
443. Lillie, F. R. Experimental studies on the development of the 
organs in the embryo of the fowl ( Gallus domesticus). Biol. Bull, v, 
pp. 92-124. 
444. . On anamniote embryos of the chick. Science xvii, p. 484. 
445. Lillie, R. S. Fusion of blastomeres and nuclear divisipn without 
cell-division in solutions of non-electrolytes. Biol. Bull, iv, pp. 164- 
178. 
446. Linden, Grafin M. von. Morphologische und physiologisch- 
chemische Untersuchungen liber die Pigmente der Lepidopteren. 
Arch. ges. Physiol, pp. 1-89 & 326, pi, i. 
1. Die gel ben und rothen Farbstofife der Vanessen. 
Abstract by author, Zool. Zentrlbl. x, pp. 608-614. 
Lister, Lord. [See Paget, S. (567).] 
447. Lo Bianco, S. Le pesche abissali eseguite da F. A. Krupp col 
Yacht Puritan nelle adiacenze di Capri ed in altre localit# del 
Mediterraneo. Mt. Stat. Neapel xvi, pp. 109-279, pis. vii-ix. 
Abstract by Zschokke, Zool. Zentrlbl. x, pp. 700-704. 
448. Lodge, Sir O. J. Interaction between the mental and the material 
aspects of things. Nature lxvii, pp. 595-597. [^Discussion by Hobson, 
Minchin, McDougall' and others follow, op. cit. p. 611, and lxviii.] 
449. Loeb, J. Artificial parthenogenesis in Molluscs. Univ. Calif. Publ. 
Physiol, i, pp. 7-9. 
450. . The limitations of biological research. T. c. pp. 33-37. 
451. . On a method by which the eggs of a sea-urchin ( Strongylo - 
centrotus puvpuratus ) can be fertilized with the sperm of a starfish 
(Asterias ochracea). T. c. pp. 1-3. 
Abstract, Zool. Zentrlbl. x, p. 385. 
