298 BIBLIOGRAPHY OF 



Insekten in ihren Wechselbeziehungen, translated by A. Passovv. Ed, 2, Berlin, 



1877. 



2019. Certain Relations between Plants and Insects. Fortnightly Rev., London, xxviii, 



1876, p. 478 ; Littell's Living Age, cxxxiii, 1876, p, 278 ; J. Soc. Arts, London, 

 XXV, 1877, pp. 280-6; Gard. Chron., London, New Sen, vii, 1877, pp. 279, 304, 



407, 439- 



2020. Scientific Lectures. Lecture L On Flowers and Insects. London, 1879. 



2021. On the sense of colour among some of the lower animals. J. Linn. Soc, Zool., 



London, xvi, 1883, pp. 121-7. Nature, London, xxv, 1882, pp. 422-4. 



2022. Flowers, fruits, and leaves. London, 1886. Ab. : Bot. Centralbl., Cassel, xxxii, 



1887, pp. 333-5. 



2023. Phytobiological observations: On the forms of Seedlings and the Causes to 



which they are due. Parts I and II. J. Linn. Soc, Bot., London, xxii, 1887, 

 pp. 341-401 ; xxiv, 1888, pp. 62-84. 



2024. On the Senses, Instincts, and Intelligence of Animals, with special reference to 



Insects. London, 1888. German Ed. by W. Marshall, Leipzig, 1889. 



2025. Ants, Bees, and Wasps : a record of observations on the habits of the social 



Hymenoptera. London, 1881. German Ed. by W. Marshall. Leipzig, 1883. 

 See also under Graber, V., and Miiller, Hermann. 



2026. Lucas, E. W. The Fertilisation of Flowers. Pharm. J., London, xviii, 1888, 



pp. 1079-81. Ab. : Justs bot. Jahresber., Leipzig, xvii, (1889) 1891, p. 541. 



2027. Lucas, Fred. Aug. On the structure of the tongue in Humming-birds. Smith- 



sonian Inst., Nation. Mus. Proc, Washington (D.C.), xiv, 1891, pp. 169-72. 



2028. The food of Humming-birds. [Of 28 individuals all but 2 contained the remains of 



insects.] Auk, New York, x, 1893, pp. 31 1-5. 



2029. The tongue of Birds. [Illustrated description of the humming-bird tongue.] 



Smithsonian Inst., Rep. Nation. Mus., Washington (D.C), (1895) 1897^ 

 pp. 1003-19. 



2030. Lucas, P. C. Variation in the number of ray-flowers in the white daisy (Chrysan- 



themum Leucanthemum). American Naturalist, Boston (Mass.), xxxii, 1898, 

 pp. 509-11. 



2031. Ludwig, Christian Gottlieb. De sexu plantarum. Dissertation, Leipzig, I737- 



2032. Ludwig, F. Die Befruchtung der Pflanzen durch Hiilfe der Insekten, und die 



Theorie Darwin's von der Entstehung der Arten. Gottingen, 1867. 



2033. tjber die Kleistogamie von Collomia grandiflora. Bot. Ztg., Leipzig, xxxv, 1877, 



pp. 777-80. 



2034. Zur Kleistogamie und Samenverbreitung bei den Collomien. Op. cit., xxxvi, 1878, 



PP- 739-43- 



2035. tJber die Bliitenformen von Plantago lanceolata L. und die Erscheinung der 



Gynodiocie. Zs. Ges. Natw., Berlin, lii, 1879, pp. 441-9. 



2036. Biologische Mitteilungen. I. Gynodimorphismus der Alsineen. Bot. Centralbl., 



Cassel, iii, 1880, pp. 829-31. 



2037. Nachtrag zum Gynodimorphismus der Alsineen. Op. cit., iii, 1880, pp. 102 1-2. 



2038. Biologische Mitteilungen. II. Heterantherie anemophiler Pflanzen. Op. cit., iii, 



1880, pp. 861-2. 



2039. Biologische Mitteilungen. III. Kleistogamie von Plantago virginica. Op. cit., iii, 



1880, pp. 862-3. 



2040. Biologische Mitteilungen. V. Uber die biologischen Eigentiimlichkeiten der 



Plantagineen. Op. cit., iii, 1880, pp. 1210-12. 



2041. iJber einen Bliitendimorphismus des anemophilen Plantago major L. Op. cit., 



i, 1880, pp. 246-7. 



2042. iJber die Bestaubungsvorrichtung und die Fliegenfalle des Hundskohls, Apo- 



