TITLES. 
Gen. Sub. 5 
36. *Bawden, H. H. The psychological theory of organic evolution. 
J. Comp. Neurol, xi, pp. 251-276. 
37. Becherucci, G. Saggio di una classificazione dei caratteri sessuali 
secondarii. Boll, Mus. Genova iv, 37 pp. 
38. Beddard, F. E. Preliminary note on the spermatophores of certain 
earthworms/ Zool. Anz. xxiv, pp. 220-223. 
39. -. On the spermatophores of the earthworms of the genus Ben- 
hamia. P. Zool. Soc. London 1901, pp. 704-709, 3 figg. 
40. *Beer, Th. Ueber primitive Sehorgane. Wien. Klin. Wochenschr. 
Nos. 11-13, 73 pp., 30 figg. 
40a. Beeton, M. & Pearson, K. On the inheritance of the duration of 
life, and on the intensity of natural selection in man. Biometrika i, 
pp. 50-89, 22 tables. 
41. Benda, C. Ueber neue Darstellungsmetlioden der Centralkorperchen 
und die Venvandtschaft der Basalkorper der Cilien mit Central¬ 
korperchen. Yerh. Berlin Physiol. Ges. in Arch. Physiol. 1901, 
pp. 147-157. 
42. -. Die Mitochondriafarbung und andere Methoden zur Unter- 
suchung der Zellsubstanzen. Yerh. Anat. Ges. xv, Yers. in Anat. 
Anz. xix, Erg. Hft. pp. 155-174. 
Benham, W. B. [See Lankester (365).] 
43. Benthall, W. Reflex action and instinct. Nature lxiv, pp. 459-463. 
44. Bernard, H. M. Studies in the retina : Rods and cones in the frog 
and in some other Amphibia. Part n. Quart. J. Micr. Sci. xliv, 
pp. 443-468, 2 pis. 
45. Berthelot, A. Yie et travaux de Charles Naudin. Rev. Scient. xv, 
pp. 1-12. 
Bilstein, E. L. [See Stohr (638).] 
46. Blackman, M. W. Spermatogenesis of the Myriapods. Notes on the 
spermatocytes and spermatids of Scolopendra , i. Kansas quart, 
x, pp. 61-76, 3 pis. 
47. Blanchon, H. L. A. Variation du plumage dans les races gallines. 
Rev. Scient. xv, pp. 141-143. 
48. -. Influence de l’alimentation dans les variations de plumage de 
la race galline. T. c. pp. 618-621. 
49. Bles, E. J. On a method of recording local faunas. Rep. Brit. Ass. 
lxxi, 1901, pp. 683-685. 
50. Bosenberg, W. Die Spinnen Deutschlands. Zoologica xiv, Heft 
35, i, pp. 1-96, 10 pis., 11 figg. 
Cited for observations on alteration of size according to diet, and modi¬ 
fications of colouring and markings according to illumination, etc. 
51. Bohn, G. L’evolution du pigment*. Series Scientia, No. 11, 8vo, 
Paris, pp. 96. 
52. -. Sur la locomotion des Yers anneles (Yers de terre et Sangsues). 
Bull. Mus. Paris 1901, No. 8, pp. 404 411. 
53. -. Theorie nouvelle de l’adaptation chromatique. C.R. Ac. Sci. 
Paris cxxxii, pp. 173-175. 
1901. [Vol. xxxviii.] 
B 5 
