96 BIBLIOGRAPHY. 



the Orange, the pulp originates from the numerous papillae which, at 

 the time of flowering, cover more or less the walls of the cells of 

 the ovary. These elongate without branching, and entirely fill the 

 cavity of the loculaments. At maturity, the cellular tissue of which 

 they are composed is filled with yellow juice. 



In the species of Cactaceae with pulpy fruits, the pulp is an ap- 

 pendage of the seed, or rather an arillus, or false testa, derived from 

 the funiculus. Many Aroideae have a pulp consisting of isolated, 

 soft, confervoid cellular filaments originating on the placenta, the 

 funiculus, and around the base of the ovules. 



Carriere, M. — Considerations generates surl'espece. — Eev.Hort., 1860, 

 pp. 383-8, 416-9. (Instances of variation in ornamental trees and 

 shrubs, and in forest trees), p. 443-6. (Instances of variation, and 

 the formation of races in animals). 



Sur quelques Varietes de Yucca. Eev. Hort., 1860, pp. 358-64. 



Descriptions of six cultivated varieties of Yucca gloriom. 



Sur la Transformation des vegetaux. Befutation de la Trans- 



formation spe cinque des vegetaux par l'eifet des milieux dans les- 

 quels ils croissent. — Eev. Sort., 1860, p. 65-71. Eelates to Mr. 

 Buckman's experiments on Glyceria fluitans and Poa aquatica, and 

 to the supposed transformation of ^Eplops into Triticum. No new 

 facts are recorded. 



Cesati, J. and T. de Notaris. — Index Seminum Hort. Eeg. Bot. Ge- 

 nuensis, 1858. — Ann. Be. Nat. Ser. iv., torn, xii., p. 381. 



Chatin, Ad. — Note sur un cas Teratologique offert par V Henophyton 

 deserti. — Bull. Soc. Bot. de France, torn, vii., pp. 10, 11. In this 

 monstrosity the ovaries were developed into a kind of gall, owing to 

 insect-puncture. 



Crepin, Fr. — Manuel de la Flore de Belgique. Bruxelles, 1860. 8vo. 

 pp. 236. 



The descriptive portion of this "Flora" is preceded by chapters 

 on Herbaria and Herborisations, the Geographical Botany of Bel- 

 gium, the " Vegetable Species," and a Glossary of terms. The author 

 bases the four botanical regions of Belgium upon the principal geo- 

 logical divisions of the country. The geological and physical fea- 

 tures of these regions are described, and lists given of their charac- 

 teristic species. Analytical tables of the orders, genera, and species 

 are also furnished. The descriptions are in French. 



Note sur quelques Plantes rares ou critiques de la Belgique. — 



Bull. Acad. Eoy. Belgique. Ser. ii., vol. vii. 



Cruger, Hermann. — Outlines of the Flora of Trinidad. — Appendix L. to 

 " Eeport on the Geology of Trinidad." By G. P. Wall and J. G. Saw- 

 kins. London, 1860. 8vo. pp. 178-95. Embracing a sketch of the ve- 

 getation of the forests, mountains, savannas, &c, and of the generally 

 prevailing physiognomic forms. In reference to the botany of the cele- 

 brated Pitch Lake, near San Fernando, with an area of 99 acres, 

 H. Cruger states, a Chara and some Confervae to grow in the water, 

 filling the crevices which intersect the surface of the pitch. About 



