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Gaule, Bedeutung d. Cytozoen, Biol. Ceniblt., vi. 11 (1886), pp. 345-51. 
Another version of Pangenesis. 
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Haddon, A. C., Introduction to Study of Embryology. London, 1887. See 
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Haeckel, Ernst, Generelle Morphologie, 1866, vol. ii. p. 170. 
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Entwickelungsvorgange. Berlin (Reimer), 1876. 
Hallez, P., Pourquoi nous ressemblons a nos parents. Paris (Doin), 1886, 
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orientated like the adult. The nuclei are centres of symmetry, but the 
protoplasm is also very important — at once as material and architect of 
the development. 
Hensen, V., Die Physiologie der Zeugung. Hermann’s Handb. d. Physiologic, 
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Hensen, W., Die Grundlage der Vererbung nach dem gegenwartigen Wissens- 
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Herdman, W. A., Remarks upon the Theory of Heredity, Lit. and Philos. 
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An amendment on the latter, and application to special cases. 
Herdman, W. A., Some Recent Contributions on the Theory of Evolution : 
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Weismann’s position. 
Hering, Ewald, Ueb. das Gedachtniss als eine allgemeine Function der 
organischen Materie. Wien (Gerold), 1870. 
Hering, Review of his Work by Ray Lankester, in Nature, July 1876. 
Hertwig, 0., Das Problem der Befruchtung und der Isotropie des Eies, eine 
Theorie der Vererbung. 8vo. Jena (Fischer), 1884. 
Hertwig, O., Lehrbuch der Entwicklungsgeschichte des Menschen und der 
Wirbelthiere, 2 Aufl., 1888. Jena. See pp. 19, 20. On the preforma- 
tion theory and its overthrow. 
His, W., Unsere Korperform und das Physiologische Problem ihrer Enstehung. 
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His, W., On the Principles of Animal Morphology, Proc. Roy. Soc. Edin., 
xv. (1888) pp. 287-298. 
Huxley, T. H., Art. “ Evolution,” Encyc. Brit., viii. pp. 744-51. 
Hoffmann, II., Vererbung erworbener Eigenschaften, Biol. Centblt., vii. 21, 
1888, p. 667 ; Botan. Zeitung, 1887, pp. 260 and 772-3. Minus nutrition 
influences flower, and change is transmitted (Papaver, Nigella, Lamium, 
&c.). Nutritive changes alter root of Daucus carota, and change is trans- 
mitted. Change in period of blossoming in Solidago, altered by external 
conditions, and transmitted. 
