FLOWER POLLINATION 261 



1167. Qraber, V. Grundlinien zur Erforschung des Helligkeits- und Farbensinnes der 



Tiere. Prag and Leipzig, 1884. 



1168. Ueber das unicorneale Tracheaten-, und speciell das Arachnoideen- und Myrio- 



poden-Auge. Arch. mikr. Anat., Bonn, xvii, 1880, pp. 58-94. 



1169. Sir John Lubbock's Observations on Ants, Bees, and Wasps. Biol. Centralbl., 



Erlangen, ii, 1882, pp. 109-17. 



1170. Fundamental versuche iiber die Helligkeits- und Farbenempfindlichkeit augen- 



loser und geblendeter Tiere. SitzBer. Ak. Wiss., Wien, Ixxxvii, 1883, Abth. i, 

 pp. 201-36. 



1171. Neue Versuche iiber die Funktion der Insektenfiihler. Biol. Centralbl., Erlangen, 



vii, 1888. 



1172. Qraebner, P. Kleistogamie. Verb. bot. Ver., Berlin, xxxv, (1893) 1894, 



p. 148. 



1173. Biologische Notizen. Op. cit., xxxv, (1893) 1894, pp. 148-57. Ab. : Justs bot. 



Jahresber., Leipzig, xxii, (1894) 1897, p. 274. 



1174. Insektenfang von Symphytum officinale. Op. cit., xxxvi, 1895, p. 22. 



1175. Typhaceae [including pollination, p. 6]. In Engler's Pflanzenreich, Heft 2. 



Leipzig, 1900. 



1176. Sparganiaceae [including pollination, p. 7]. Op. cit., Heft 2. Leipzig, 1900. 



1177. Qraenicher, S. The Fertilisation of Symphoricarpos and Lonicera. Bull. Wis. 



Nat. Hist. Soc, Milwaukee, New Sen, i, 1900, pp. 141-56. 



1178. The Fertilization and Insect-Visitors of our earliest entomophilous flowers. Op. 



cit., i, 1900, pp. 73-84- 



1179. The last anthophilous insects of the season. Op. cit., i, 1900, pp. 187-9. 



1180. The Syrphidae of Milwaukee County. [Numerous facts regarding flower-visits.] 



Op. cit., i, 1900, pp. 167-77. 



1181. Flowers adapted to flesh-flies. Op. cit., ii, 1902, pp. 29-38. Ab. : Bot. Centralbl., 



Cassel, xc, 1902, pp. 609-10. 



1182. GraBBmann, P. Die Septaldriisen. Ihre Verbreitung, Entstehungund Verrichtung, 



Flora, Marburg, Ixvii, 1884, pp. 113-28, 129-36. 



1183. Graves, Jas. A. A problem in pollination. Asa Gray Bull, Takoma Park (D.C.), 



V, 1897, p. 46. 



1184. Gray, Asa. Notes of a Botanical Excursion to the Mountains of North Carolina, 



&c., with some remarks on the botany of the higher Alleghany mountains. 

 [Heterostyly of Hedyotis purpurea.] Amer. J. Sci., New Haven (Conn.), xlii, 

 1842, pp. 1-49; J. Bot., London, i, 1842, pp. 1-14, 217-37; ) 1843, 

 pp. 113-25; iii, 1844, pp. 230-42. Reprint, Asa Gray Scientific Papers, II, 

 pp. 22-70. 



1185. Review of Darwin's Fertilisation of Orchids. Amer. J. Sci., New Haven (Conn.), 



Ser. 2, xxxiv, 1862, pp. 138-44. 



1186. Enumeration of Plants of the Rocky Mountains. Op. cit., xxxiv, 1862, p. 33. 



1187. Dimorphism in the Genitalia of Flowers. Op. cit., xxxiv, 1862, pp. 419, 420; 



J, Bot., London, i, 1863, pp. 147-9. 



1188. Fertilisation of Orchids through the Agency of Insects. Op. cit, xxxiv, 1862, 



pp. 420-9. 



1189. Structure and Fertilization of certain Orchids. [Plantanthera (Habenaria) flava 



and Gymnadenia tridentata.] Op. cit., xxxvi, 1863, pp. 292-4. 



1190. Morphology of Stamens and use of aborted Organs. Op. cit.,xliii, 1867, pp. 273-4. 



1191. Botanical Notes and Queries. [Pollination mechanism of Clerodendron Thomp- 



sonae.] Amer. Nat., Boston (Mass.), i, 1868, pp. 493-4. 



1192. Cross-fertilisation of Scrophularia nodosa. J. Bot., London, ix, 1871, p. 375. 



1193. Botany for Young People. Part II. How Plants behave. New York, 1872. 



