490 BOTANY OF CROP PLANTS 



BoNAViA, E.: Oranges and Lemons of India, vol. i. 



CoiT, J. E. : A Study of the Factors Influencing Seed Formation in Citrus 

 Fruits. Calif. Agr. Exp. Sta. Rpt., 105-106, 1914. 

 Citrus Fruits. The MacMillan Co., 1915. 

 Hood, S. C, and Russell, G. A.: The Production of Sweet-orange Oil and 

 a New Machine for Peeling Citrus Fruits. U. S. Dept. Agr. Bull. 399: 

 1-19, 1916. 

 Hume, H. Harold: Pomelos. Fla. Agr. Exp. Sta. Bull. 58: 385-421, 1901. 

 The Kumquats. Fla. Agr. Exp. Sta. Bull. 65: 555-566, 1902. 

 The Mandarin Orange Group. Fla. Agr. Exp. Sta. Bull. 66: 571-594. 1903- 

 Citrus Fruits and Their Culture. Orange Judd Co., 1913. 

 Ikeda, Tomochika: On the Parthenocarpy of Citrus fruits. Jour. Sci. Agr. 



Soc. Tokyo, 63, 1904. 

 OsAWA, I.: Cytological and Experimental Studies in Citrus. Jour. Col. Agr. 



Imp. Univ. Tokyo, 4: 83-116, 1912. 

 Strasburger, E.: tJber Polyembryonie. Jenaisch. Zeitsch. Naturwiss., 



12: 647-670, 1878. 

 Webber, H. J.: Complications in Citrus Hybridization Caused by Poly- 

 embryony. Science, n. s., 11: 308, 1900. 



