7 
where in the rubber industry. By it the entire woody portion of 
the plant is finely ground, and the rubber extracted by liquids 
from the dust. 
This plant has been made the subject of exhaustive study by 
Professor Francis E. Lloyd, and we hope to have him present the 
subject to us soon, in an illustrated lecture. 
The third, and what we may call the new variety of Mexican 
rubber, is also unique as to its character, and the methods em- 
ployed in preparing it. It is produced by the Euphorbia elastica, 
and is therefore a near relative of the Para rubber. 
This tree inhabits a region intermediate in location and climatic 
character between those producing the two previously described 
eee namely, the hilly country where the western edge of the 
e-land breaks down into the coast slope, at an altitude mostly 
from 5,000 to 7,000 feet. The climate of this region might 
be called subtropical. The banana and the orange grow here, but 
only exceptionally produce fruit. Some poor apples are grown 
and corn is the staple agricultural product. Although there is a 
long dry season, the rainy season is long enough, and its rains 
abundant enough, to produce the crops without irrigation, for the 
most par 
This Buphotiia will not grow on the alluvial plains, but only 
on the rough rocky hillsides, where the drainage is good. Its 
arborescent associates are Randias, Acacias, Convolvuli and a 
number of Cactaceae. It is a gregarious species, the branches 
often interarching over considerable areas, although many smaller 
trees and shrubs are intermingled. It is a rather small tree, the 
trunks usually less than two feet in diameter, and the height 
usually under fifty feet. Its branches and branchlets are rather 
few and massive, there being a dearth of fine twigs. It is there- 
fore not very leafy and does not afford much shade. The leaves 
are mostly crowded at the ends of the branchlets, and are oblong, 
thick and smooth, and about six ae in length by one to one 
the trunk and large branches soon exfoliates in large, very thin, 
papery, translucent sheets of an orange-yellow or orange-red 
