PLANT HYBRIDIZATION BEFORE MENDEL 33 



12. Popenoe^ Paul B. 



(a) Babylonian dates for California. Pomona College Jour, 

 of Economic Botany, 3:459, May 1913. 



(b) The pollination of the date palm. Journal of the Amer- 

 ican Oriental Society, 41 :343-54, 1922. 



13. Strabo. 



(a) Strabonis geographica, curantibus C. Mullero et F. Du- 

 buero, I Vol. Paris, 1853. (See Bk. 17, Cap. 1.) 



(b) The geography of Strabo, with an English translation 

 by Horace Leonard Jones, 8 vols., i6mo. London and 

 New York, 1917. 



14. Swingle, Walter T. 



The date palm and its utilization in the southwestern states. 

 Bureau of Plant Industry, U. S. Dep't of Agriculture, Circ. 

 19. June 1913. 



15. Theophrastus. 



(a) Theophrasti Eresii quae supersunt opera et excerpta li- 

 brorum, ed. G. Schneider, 5 vols. Leipzig, 1818. (Vol. 1, 

 Greek Text: Vol. 2, Latin trans. De historia plantarum, 

 200 pp.; De causis plantarum, 194 pp. (See on the date 

 palm, De Hist. PL, Bk. 2 ; Cap. 6 & 8.; De Causis PL, 

 Bk. 1, Cap. 20; Bk. 2, Cap. 9, Bk. 3, Cap. 18.) 



(b) Inquiry into plants, and minor works on odors and 

 weather signs, with an English translation by Sir Arthur 

 Hort. 2 vols. i6mo. London and New York. 1916. 



