LITERATURE CITED 



(1) Bonnier, Gaston. 



1878. Les nectaires. Etude critique, anatomique et physiologique. 

 In Ann. Sci. Nat., Bot., ser. 6, t. 8, pp. 5-212, 8 pis. 



(2) Bonnier, Gaston, and Flahault, Ch. 



1878. Observations sur les modifications des vegetaux suivant les con- 

 ditions physiques du milieu. In Ann. Sci. Nat. Bot., ser. 6, t. 7„ 

 pp. 93-125. 



(3) Bowlet, A. L. 



1901. Elements of statistics. Ed. 1, 330 pp., illus., London. 



(4) Briggs, L. J., and Shantz, H. L. 



1916. Hourly transpiration rate on clear days as determined by cyclic 

 environmental factors. In Jour. Agr. Research, vol. 5, No. 14, pp. 

 583-649, 22 figs., 3 pis. 



(5) 



1916. Daily transpiration during the normal growth period and its 

 correlation with the weather. In Jour. Agr. Research, vol. 7, No. 

 4, pp. 155-212, 18 figs., 2 pis. 



(6) Darwin, Charles. 



1885. The effects of cross and self fertilisation in the vegetable king- 

 dom, viii, 482 pp. New York. 



(7) Davenport, C. B. 



1904. Statistical methods with special reference to biological variation. 

 2d ed., New York, viii, 223 pp., 11 figs., tables. 



(8) Demuth, George S. 



1912. Comb honey. U. S. Dept. Agr. Farmers' Bui. 503, 47 pp., 20 

 figs. 



(9) 



1923. Temperature and nectar secretion. In Gleanings Bee Cult, 

 vol. 51, No. 9, p. 582. 



(10) DrjFOUR, Leon. 



1897. Travail des butineuses et recolte du miel. In Apiculteur, vol. 

 41, No. 8, pp. 300-312, 6 figs. 



(ID 



1899. Etude sur l'evaporation du nectar. In Apiculteur, vol. 43, No. 

 10, pp. 451-458. 



(12) Gardiner, W. 



1884. On the physiological significance of water glands and nectaries. 

 In Proc. Cambridge Phil. Soc, vol. 5, pp. 35-50, 1 pi. 



(13) Garner, W. W., and Allard, H. A. 



1920. Effect of the relative length of day and night and other factors 

 of the environment on growth and reproduction in plants. In 

 Jour. Agr. Research, vol. 18, No. 11, pp. 553-606, 3 figs., 16 pis. 



(14) Harratjlt, C. 



1901. Observations faites en 1900 sur la nectar et les plantes 

 mellif eres. In Apiculteur, vol. 45, Nos. 3, 4, pp. 107-108, 151-153. 



(15) 



1901. Production du nectar (note complementaire) . In Annuaire de 

 la federation des societes frangaises d'Apiculture, 10 me session, 

 pp. 67-70. 



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