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47 H. M. C. — Birds and Flowers. Ilardwicke's Science Gossip, 1S74. 



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48 Hardwicke's Science Gossip, 1874, p. 135. 



49 Hildebrand, F. — Ueber einige Bestaubungs Einrichtungen. Berich. 



der deutsch. bot. Gesellschaft, i. Taf. xiii. Fig. 1-9, p. 455. 

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50 Hollingsworth — Fertilization of Flowers by Humming-Birds. Am. 



Nat. vol. xiv. p. 126. 



51 Iloft'er, Eduard — Beobachtungen ueber bliithenbesuchende Apideen. 



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52 Huber, M. P. — Observations on several Species of Apis known by 



the name of Hiimble-Bees and called Bominantices by Lin- 

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53 Ingen, Gilbert Van— Humble-Bees and Petnnia. Bot. Gazette, vol.. 



xii. p. 89. 



54 Bees mutilating Flowers. Bot. Gizelte. vol. xii. p. 229. 



55 Kerner, A. — Die Schutzm'ttel der Bliithen gegen umberufene Griste. 



Wien, 1876. Festschrift. Zool.-bot. Gesellsch. Wien. Abst. 

 Nature, vol. xv. pp. 237-39. 

 55rt Flowers and their Unbidden Guests. English Translation by 



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 Review in Nature, vol. xix. p. 214. 1879. 



56 Die Srhutzmittel des Pollens gegen die Nachtheile vorzeitiger 



Dislocation u. gegen die Nachtheile vorzeitiger Befruchtung, 

 71 pp., Innsbruck, 1873. From the Berichte des naturw. med. 

 Vereines zu Innsbruck, ii. und iii. Jahrg. 

 56^ Key, Rev. H. C. — Flowers of the Primrose destroyed by Birds. Na- 

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57 Kirby and Spence — Introduction to Entomology. 7th Edition, Lon- 



don, 1873. p. 562. 

 57a Kuntze, Otto — Die Schutzmittel der Pflanzen gegen Thiere und Wet- 

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 zur Bot. Zeit. vol. xv. Leipzig, 1877. 



57*^ L. N.J. — The Fertilization of Plants. The Cultivator and Country 

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58 Leggett, W. H, — Bees puncturing Flowers. Bull, of the Torrey Bot- 



Club. vol. iii. p. 33. See N. L. Britton. 



59 Loew, E. — Beobachtungen iiber den Blumenbesuch von Insekten an 



Freilandptlanzen des Bot. Gartens zu Berlin. Sonderabdruck 

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 1884, p. 660. 



