232 APPENDIX. 



it in Algeria. Why should it not be introduced into 

 Southern California? 



Mimusops globosa. The Ballata. Furnishes a milky juice 

 equal to the best gutta-percha of the East. This should 

 be tried. It is a native of British Guiana. 

 Butyrospermum ParMi, the Karite or Butter-Tree. An African 

 tree, furnishing from its seeds the Shea-butter of com- 

 merce, used in soap-making, and a gum or coagulated 

 juice which has recently been found to be equal to the 

 best gutta-percha. It is possible that this tree might be 

 made to grow in the warmer parts of California. 

 Cinchona calisaya, Cinchona succirubra, Cinchona condaminea. 

 These three species of cinchona have been successfully 

 cultivated in Mexico ; in the Canton of Cordova several 

 thousand cinchona-trees exist and are doing well. The 

 beautiful trees with large velvety leaves, turning red when 

 old, may be seen by those who travel by rail from Vera 

 Cruz to Mexico. It is worthy of serious effort to cultivate 

 this valuable tree in Texas and California. 

 Quillaja saponacia, Quillaia-bark Tree, Soap-bark Tree. This 

 large tree (fifty to sixty feet) yields in its bark a product 

 very valuable in cleaning delicate colored fabrics, and 

 could undoubtedly be grown with profit in California. 

 The sub-tropical trees mentioned in the above list can all 

 be obtained from the nursery-men (e.g., Siebrecht & Wadley, 

 Eose-Hill Nurseries, New Eochelle, New York), or of the 

 Agricultural Bureau, Washington, D. C., and they can be 

 successfully grown in any of the Southern States where 

 the winter temperature does not fall below 45 F. I have 

 not mentioned many well-known varieties, but have preferred 



