GEOGRAPHICAL BOTANY. 377 



Junghuhn gives the following statements regarding the 

 altitudinal limits of some branches of cultivation in Java. 

 Coffee might probably be cultivated as far as a level of 

 5000', but at present the plantations do not usually 

 extend beyond 3000' or 4000' (p. 234). Artocarpus 

 integrifolia and Arenga saccharifera 3000', Duris zi- 

 betUnw-r-WW (p. 419). 



Kittlitz gives two landscapes of districts in Manilla 

 (Plates XXIII, XXIV), which, like all the others, are 

 extremely characteristic, but deficient in sufficient bota- 

 nical elucidation. Montagne has described the Algce of 

 the Philippine Islands from Gumming' s collections (Lond. 

 Journ. of Bot, 1844, pp. 658-6:2). 



Ill AFRICA. 



Of the botanical investigations of the French in Algeria 

 but few notices have yet been published. Durieu met 

 with extensive forests of cedar at Blidah, on the Lesser 

 Atlas (Comptes rendus, vol. v, p. 18). As far as a level 

 of from 7 800m. the mountain-slope was inhabited, 

 and the soil cultivated ; the oak then began to be inter- 

 mixed with the fruit trees, and soon after single majestic 

 cedars, 40 meters in height, were seen. But it was only 

 on the southern declivity that the traveller met with con- 

 nected forests of this tree, which are cut down annually 

 by the inhabitants ; they do not, however, appear to be 

 destroyed as at Mount Lebanon, but are apparently readily 

 reproduced. At Mascara, Durieu found Cattitris quadri- 

 valvis common, and increasing in frequency thence to- 

 wards the south (Comptes rendus, vol. v, p. 19). Bory 

 de St. Vincent has described some new species of Isoetes, 

 partly living upon a dry soil, from Algeria (1. c. vol. xviii). 



We may now recur to Russeger's travels (Annual 

 Report for 1842), since his work has proceeded to a 

 considerable extent, and commenced the illustration of 



