688 BOTANY. 
woody species, and over 300 trees. Of these trees about 250 spe- 
cies are somewhere tolerably abundant, about 120: species grow 
to a tolerably large size, 20 attain a height of 100 feet, 12 a 
height sometimes of over 200, and a few—perhaps 5 or 6—a 
height of 300. The speaker analyzed the districts, adding: New — 
England I consider to contain 80 or 85. species, of which 50 may 
reach a height of fifty feet; Maine is the great source of pine and 
spruce lumber, but as a whole the hard wood species predominate. 
Without going into the details of this flora, it is sufficient to give 
the author’s remark that the area of woodland in New England is 
not perhaps greatly diminishing, but the amount of timber capa- 
ble of being made into sawed lumber is lessening. The Middle 
States have about 100 to 105 species of trees, 65 to 67 of which 
sometimes reach 50 feet in height. Here were originally very 
heavy forests. There are still large areas heavily timbered, but 
the timber for all purposes is unquestionably rapidly diminishing, 
and there is no compensating influence going on for increase. 
But in the Middle and New England. States various hard woods 
attain their greatest perfection as to strength and durability ; and 
as a consequence here we find the manufactures that are depen- 
dent on those woods. In the southeastern region—that is, €x- 
tending from Virginia and Florida—we have about 130 species. 
In each case these form the conspicuous elements of the land- 
scape. 75 attain a height of 50 feet or more, and about a dozen 
species a height of 100 feet. A belt of pine timber extends the 
whole length of this region, which is the great source of the har 
and yellow pine. The author described the ornamental trens of 
that beautiful region, and resumed: The northwestern region, 
from Ohio to Minnesota, and north of the Ohio River, is repre 
sented by about 105 to 110 species, 68 or 70 of which may 
a height of fifty feet. That is the district furnishing at present 
the largest production of sawed lumber within the United States. 
Michigan alone furnished in 1870 of the 12,750,000 of M. feet 
2,250,000; Wisconsin furnished over 1,000,000 —the two ae 
thus producing more than one-fourth of the whole yield returned 
in that year. 
The author alluded to the rapidity of the destruction going on S. 
in that region ; also of the diminution of sawing lumber in the 
forests, and the increase in woodland over the prairie re 
becomes cultivated. The southwestern region, exten 
i, 
gion asit 
ding from 
