BOTANICAL NEWS. 219 
the India- -rubber-producing species is given. The plants are then 
treated in the natural orders, those of the Euphorbiacee containing 
the Heveas or Siphonias being first, producing as they do the best 
kinds of American rubber, known as Para rubber. Then follow 
the eases Artocarpeous trees, of which two species—C. elastica, 
Cerv. - Markhamiana, a new species of the author’s—furnish the 
next sg uality. They are known as Ulé trees, and are found in 
Mexico, Fabien Nicaragua, Honduras, Costa Rica, Isthmus of 
Panama, on the coast of America, down to Guayaquil, and the 
“— of Chimbo 
tcus elastica, "Deeks belonging to the same natural order, fur- 
nishes Indian or Assam ‘Caoutchoue ; and in the Apocynee we ‘have 
a 
species of Willughbeia, notably W. edulis, Roxb., in Chittagong, 
Silhet, Madagascar, a Mauritius, and W. martabanica, Wall., in 
Martaban and Chitta 
art IL. is dlevenelbas “The Cultivati d Accli f Trees 
yielding Caoutchouc,” in which the aspects of the rubber forests, the 
present precarious manner of collecting, and the necessity of cultiva- 
tion and conservation are treated. “The ce of Ficus elastica 
and the Improvement of its Caoutchouc,” is next considered. In 
the matter of rh cst of Caou tebote- yielding plants, the 
Heveas are pointed ou primary importance. “Seeds of the 
Hevea,” we are told, “ pd "abelly be procured from the Amazon 
districts, and their germination ensured on the spot, as proba ably 
from the quantity of oil they contain they would rapidly lose this 
power, oily seeds losing their germinating power quicker than non- 
oily seeds, owing to oxidation of the oil soon setting in.” The re- 
port coneluitas with some practical instructions on the collection and 
preservation of specimens of Caoutchouc-yielding plants, and a 
memorandum is added by Dr. Brandis on the Indian aspects of the 
acclimatisation question. 
he two maps show, first, an approximate sketch of the geogra- 
phical distribution of " Caoutchouc-yielding trees, and, secondly the 
distribution of Ficus elastica in Assam. e plates lastrate Hevea 
brasiliensis, Castilloa elastica, C. Wai Rhene, and Landolphia owar- 
ensis. J. RJ. 
Botanical Petws. 
Articies IN JOURNALS. 
Annales des Se. Nat. (t. xvii., n. 1—8, April).—G. de Saporta, 
“* Revision of the (Fossil) Flora of the Aix cous (pl. 1—5).—E. 
Bortiet, ‘‘ Researches on the Gonidia of Lichens” (pl. 6—16),— 
