FLOWER POLLINATION 253 



992. Botanical Notes from Bainbridge, Georgia. [Colour-change in the flowers of 



Gossypium album.] Bull. Torrey Bot CI., New York, xx, 1893, p. 386. 



993. Forbes, Henry O. Fertilisation of Orchids. Nature, London, xvi, 1877, p. 102. 



994. Selective Discrimination of Insects. Op. cit., xvii, 1878, p. 62. 



995. Two Kinds of Stamens with different Functions in the same Flower (Melastoma). 



Op. cit., xxvi, 1B82, p. 386. 

 --996. On the Contrivances for insuring self-fertilization in some tropical Orchids. 



J. Linn. Soc, Bot., London, xxi, 1885, pp. 538-50. 

 , 997. ANaturalist'sWanderingsintheEastemArchipelago from 1878 to 1883. London, 



1885. German Ed. by R. Teuscher, ' Wanderungen eines Naturforschers im 



Malayischen Archipel von 1878-83.' Jena, 1886. 



998. rorbeSjW. A. Fertilisation of Orchids (Anagraecum). Nature, London, viii, 1873, 



p. 121. 



999. Fordham, George. Destruction of Flowers by Birds. Nature, London, xii, 1875, 



P- 783. 



1000. Forel, August. Beitrag zur Kenntnis der Sinnesempfindungen der Insekten. Mitt. 



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1001. Zur Lehre vonden Sinnesempfindungen der Insecten. Kosmos, Stuttgart, xiii, 1883, 



pp. 139-43- 



1002. Experiences et remarques critiques sur les sensations des insectes. Recueil Zool., 



Suisse, Geneve et Bile, iv, 1886-8, pp. 1-50, 145-240. 



1003. Les fourmis perqoivent-elles I'ultra-violet avec leurs yeux ou avec leur peau ? Arch. 



Sci. Phys., Geneve, Ser. 3, xvi, 1886, pp. 346-50. 



1004. La vision de I'ultra-violet par les fourmis. Rev. sci., Paris, xvi, 1886. 



1005. Forsberg. Ober die Geschlechterverteilung bei Juniperus communis. Bot. Cen- 



tralbl., Cassel, xxxiii, 1888, p. 91. 

 Forster, Thomas. See under Allen, Grant. 



1006. Foumier, E. Fecondation dans les Phan^rogames. Paris, 1863. 



1007. Fowler.Carroll. Califomian Bees of the genus Nomada. [Nomada civilis 0-ej.r., 



N. lepida Cress., and N. melliventris Cress, on Ranunculus californicus and 

 Brassica campestris : N. obliqua sp. nov., N. obscura sp. nov., and N. bisignata 

 Say on Ranunculus californicus : N. rubra Prov. on Eschscholtzia califomica 

 and Medicago sativa.] Ent. News Acad. Nat. Sci., Amer. Ent Soc, 

 Philadelphia (Pa.), x, 1899, pp. 157-62. 



1008. Fox, Williani J. Synopsis of the United States species of the hymenopterous 



genus Centris Fabr., with description of a new species from Trinidad. [Visits 

 to Parkinsonia Torreyana and Cevallia sinuata.] Proc. Acad. Nat. Sci., Phila- 

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 See also under Cookerell, T. D. A. 



1009. Franchet, A. Mutisiaceae japonicae. [Spring and autumn forms of Gerbera 



Anandria.] M^m. Boissier, Geneve, No. 14, 1900.— Ab.: Bot. Centralbl., Cassel, 

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1010. Francke, Alfr. Einige Beitrage zur Kenntnis der Bestaubungseinrichtungen der 



Pflanzen. Inaug. Dissertation (Freiburg i. B.), Halle, 1883. 



1011. Frank, C. A. Untersuchungen iiber die Farben der Bliiten. Tiibingen, 1825. 



1012. Freda, A. Alcune osservazioni su di una infiorescenza femminea di Dasylirion 



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1013. Fredrikson, T. Nigra biologiska foreteelser vid blomningen hos Geranium vi- 



scidulum Fr. Bot. Not., Lund, 1894, pp. 89-92. 



1014. French, B. C. Insects caught by Apocynum. Bot. Gaz., Chicago (111.), viii, 1883, 



pp. 171-2. 



1015. Frey, H. Die Lepidopteren der Schweiz. Leipzig, 1880. 



