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249 
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,, 1912b. Somatic mitoses in CEnothera. 
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,, 1914a. Breeding experiments which show that hybridization 
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„ 1914b. Some CEnotheras from Cheshire and Lancashire. 
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„ 1915a. The Mutation Factor in Evolution, with particular 
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London: Macmillan, pp. 353, figs. 114. 
„ 1915b. On successive duplicate mutations. 
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„ 1915c. Heredity and mutation as cell phenomena. 
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„ 1915d. On the nature of mutations. 
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„ 1915e. On the origin and behaviour of CEnothera rubricalyx. 
Journ. of Genetics 4 : 353-360. 
,, 1915f. On the modification of characters by crossing. 
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„ 1916. On pairs of species. Bot. Gazette 61 : 177-212, figs. 12. 
„ 1917a. Vegetative segregation in a hybrid race. 
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„ 1917b. A systematic study of the North American genus 
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„ 1917c. The mutation theory and the species concept. 
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„ 1918a. A systematic study of the North American Melanthacese 
from the genetic standpoint. 
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„ 1918b. A systematic analytical study of certain North American 
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Glen, Edith H., 1918. A revision of certain points in the early development 
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Gudernatsch, J. F., 1914. Feeding experiments on tadpoles, II. A further 
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