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I. Comprehensive Zoology. 
Compr. Zool. 3 
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22. — Carey, E. J. Studies in the 
dynamics of histogenesis. IV. Tension 
of differential growth as a stimulus to 
myogenesis in the limb. V. Com- 
pression between the accelerated growth 
centers of the segmental skeleton as a 
stimulus to joint formation. VI. Resis- 
tances to skeletal growth as stimuli to 
chondrogenesis and osteogenesis. Amer. 
J. Anat. 29 1921 pp. 93-115 9 figs. 
Carleton, H. M. vide Champy. 
23. — Caullery, M. La symbiose chez 
les animaux. Bui. Inst. Pasteur Paris 
19 1921 pp. 567-583 617-627. 
24. — Ceni, C. Das Cehirn und dio 
Schilddriisenfunktion. Experimentelle 
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Leipzig 47 1921 pp. 587-616 12 figs. 
25. — Ceni, C. Das Gehirn und die 
Nebennierenfunktion. Arch. Entw- 
Mech. Leipzig 49 1921 pp. 491-509 
8 figs. 
26. — Champy, C. Notes de bio- 
logie cytologique. Quelques r&sultats 
de la methode de culture des tissus. 
VI. Le testicule. Arch. Zool. Exp. 
Paris 60 1920 (461-500) figs. 1-48. 
27. — Champy, C. and Carleton, H. M. 
Observations on the shape of the 
nucleus and its determination. Quart. 
J. Micros, Sci. London 65 1921 pp. 591- 
610 2 pis. 11 text-figs. 
28. — Child, C. M. Le problfeme 
d’integration physiologique. Scientia 
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29. — Clark, A. H. A new classifica- 
tion of animals. Bull. Inst. Oceanogr. 
Monaco No. 400 1921 pp. 1-24. 
30. — Clark, B. L. The stratigraphic 
and faunal relationships of the 
Meganos Group, Middle Eocene of 
California. Journ. Geol. Chicago 111. 
29 1921 pp. 125-165 7 figs. 
31. — Clark, F. W. and Wheeler, W. C. 
The Inorganic Constituents of Marine 
Invertebrates. Prof. Paprs U.S. Geol. 
Surv. Washington 102 1917 pp. 1-56. 
32. — Clarke, J. M. Organic depen- 
dence and disease : their origin and 
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33. — Cockerell, T. D. A. Zoology. A 
Textbook for Colleges and Universities, 
pp. i-xii + 1-558 figs. 1-211 New 
York (World Book Coy.) 1920. 
34. — Cole, A. E. Oxygen supply of 
certain animals living in water contain- 
ing no dissolved oxygen. J. Exp. Zool. 
Philadelphia 33 1921 pp. 293-320 2 figs. 
35. — Cu6not, L. L’Heredite des 
caract&res acquis. Rev. gen. sci. Paris 
32 1921 pp. 544-550 3 figs. 
36. — Couffon, 0. Sur la faune du 
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g6ol. Paris 18 1918 (1919) pp. 214-16. 
37. — Cunningham, J. T. Hormones 
and Heredity. A discussion of the 
evolution of adaptations and tho 
evolution of species, pp. xx + 246 
3 pis. London (Constable) 1921 8vo. 
38. — Czekanowski, J. Les lois de 
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Pheredit6 de Pearson. Rev. gen. sci. 
Paris 32 1921 pp. 671-675. 
39. — Davenport, C. B. Heredity of 
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40. — Davies, A. M. An Introduction 
to Palaeontology, pp. i-xi +1-414 
frontispiece and figs. 1-100. London 
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41. — Demoll, R. Die Vererbarkeit 
somatischer Erwerbungen. Arch. 
EntwMech. Leipzig 47 1921 pp. 443- 
451 2 pis. 1 text-fig. 
42. — Demoll, R. Uber die Vorstel- 
lungen dor Tiere. Zool. Jalirb. Jena 
Abt. f. allg. Zool. 38 1921 pp. 405-448 
2 text-figs. 
43. — Detlefsen, J. A. and Roberts, E. 
Studies in crossing over. J. Exp. Zool. 
Philadelphia 32 1921 pp. 333-354 2 
text-figs. 
44. — Dexler, H. Tierpsychologie als 
Naturwissenschaft. Neurol. Centrabl. 
Leipizg 40 1921 pp. 113-133. 
Dobkievicz, L. von vide Romeis. 
45. — Doderlein, L. Betrachtungen 
uber die Entwicklung der Nahrungs- 
aufmahme bei Wirbeltieren. Zoologica 
Stuttgart pt. 71 1921 pp 1-59 32 text- 
figs. 
