126 



1903 Ward, Osbert 



1914 Warren, E. . . * 



1889 Watt, Sir G. 



1891 Watt, Sir G. 



1908 Watt, Sir G. 



1840 Webb, Barker, and 

 Berthelot, S. 



♦1893- Weber, Dr. A. 

 1899 



1902 Weber, Dr. A. 



1888 Wetterwald 



1913 White, Jean 



1914 White, Jean 



1850 Wight, D. 



1912a Wolf, F. A, 



1912b Wolf, F. A. 



1912 Wolf, F. A., and Heald, D. 



1911 Wooton, E. C. 



1911 Zimmerman, A. 



1910 Zimmerman, A. 



KEFERENCES TO LITERATURE— cowtmited. 

 The Vale of Orotava. London, 1903. 



The Prickly Pear Pest. South African Agric. Journal, 7, 1914, pp. 387-391. 

 Abstract in Review of Applied Entomology, Ser. A. Agricultural, 2 

 (7) July, 1914, p. 440. 



Dictionary of Economic Products of India, vol. 2, 1889. 



Dictionary of Economic Products of India, vol. 5, 1891. 



Commercial Products of India, 1908. 



Phytographia Canariensis : Histoire Natuielle des lies Canarias, tome m, 



pt. 3, Paris, 1840. 

 Bois. Diet. d'Hort., 1893-1899. 



Etudes sur les Opuntias. Bull, se la Soci6t6 Nat. d' Acclimatation, 1902. 



Blatt-und Sproasbildimg bei Euphorbien und Cacteen. Basle., 1888. 



Report of the Officer in Charge of the Prickly Pear Experimental Station, 



Dulacca. Appendix 4 Ann. Rep. Dept. Public Lands, Old., for the 



year 1912 (1913). 

 Report of the Officer in Charge of the Prickly Pear Experimental Station, 



Dulacca. Appendix 4 Ann. Rep. Dept. Public Lands, Qld., for the 



year 1913 (1914). 

 Illustrations of Indian Botany n, pt. 114, 1850. 



Some Fungous Diseases of the Prickly Pear, OpunMa Undheimeri, Engel. 



Annales Mycol. 10, 1912, pp. 113-134. 

 Notes on the Anatomy of Opuntia Undheimeri. Plant World, 15, 1912, 



pp. 294-299. 

 See Heald, 1912. 



Cacti in New Mexico. BuU. 78, Agr. Exp. Sta., New Mexico, 1911. 



Report of work at Amani, A.D., W. Africa. Der Pflanzer, Jahr. viu, 1, 



p. 231, 1911. 

 Die Opuntien als Nahrungsmittel fur Menschen und Tiere. Der Pflanzer, 



Jahr. VI, No. 4, pp. 51-64; No. 5, pp. 72-77; Nos. 6-7, pp. 81-84. Tanga, 



1910. 



' Keferences marked thus have not been consulted. 



