BOTANICAL LlTiKATUKK. 159 



del Castillo's Flore de la Polynesie franyaisc; Doctor Guppy's Solomon 

 Islands and their Natives; Warburg, Beitnigo zur Kenntniss der 

 pa]uianischen Flora (P^ngler's flahrh., vol. 13, 1890). In addition to 

 these may be mentioned the puldications of results of the scientiHc 

 expeditions of Malaspina, Romanzotf, Fre\xinet, and Dumontd'Urville, 

 already referred to, and the botany of the Challenger expedition. 



Other tropical floras. — Since many of the plants of (juam are 

 of wide distribution in the Tropics, it is interesting to compare its 

 llora with those of other tropical countries. The principal works 

 used for comparison have ])ecn Padre Blanco's Flora de Filipinas; 

 Hooker's Flora of British India; Trimen\s Handbook of the Flora of 

 Ceylon; Miquel's Flora van Nederlandsch Indie; Grisebacirs Flora of 

 the British West Indian Islands; Seemann's Flora of the Isthmus of 

 Panama, in the Botany of tlie Voyage of the Herald; Urban's S3"m- 

 bolae Antillanae; Pittier's Primitiae florae costaricensis; and the Flore 

 phanerogam ique des Antilles franyaises (Guadeloupe et Martinique), 

 par le P. P. Duss (in Annales de ITnstitut Colonial de Marseille). 

 Man}' of the botanical descriptions included in the Descriptive 

 catalogue of plants have been taken directl}^ from Padre Blanco, 

 Hooker, and Trimen, and a few from Hillebrand, Grisebach, and 

 Seemann. 



Geographical distribution and ecology. — The following are the 

 more important works consulted: Grisebach's Geographische Ver- 

 breitung and Vegetation der Erde; Schimper's Pllanzen-Geographie 

 and Indomalayische Strandtiora; Treub's Notice sur la nouvelle flore de 

 Krakatau; Haberlandt's Botanische Tropenreise; Darwin's Voyage of 

 the Beagle; Warming's Okologische Pflanzengeographie (German edi- 

 tion); De Candollc's Origin of Cultivated Plants; and Wallace's Island 

 Life. The attention of those interested in the dispersal of plants by 

 ocean currents is called to the works of Hemsley and Guppy, given in 

 the list below, and the works of Treub and Schimper, already cited. 



Syste:\iatic and physiological botany. — Engler and Prantl's 

 Natiirliche Pflanzenfamilien; Strasl)urger, Noll, Schenck, und Schim- 

 per'sLehrbuchder Botanik; Haberlandt's Pflanzenanatomie; Coulter's 

 plant structure; Delpino's Rapporti tra insetti e tra nettarii estranuziali; 

 and Darwin's Power of Movement in Plants and Effects of Cross and 

 Self Fertilization, are among the principal works consulted. 



tropical agriculture and economic products. 



Among the most important works on tropical agriculture consulted 

 are Firminger's Mamial of Gardening foj- Bengal and Upper India; 

 Simmonds's Tropical Agriculture; Nicholls's Text-book of Tropical 

 Agriculture; Dybowski's Traite pratique de cultures tropicales; Sade- 

 beck's Kulturgewachse der deutschen Kolonien und ihre Erzeugnisse; 

 Sender's Tropische Agrikultur; Poulet's Livre du Colon. Of tiuse 



