150 
vided with a label aaa first, the common or local name of 
h of 
the tree, second, the the species, and third, the geo- 
epee distributio the distribution of our trees is interest- 
ing from several eer and this collection as it is now la- 
belled eee the following facts which seem worthy of 
notice : 
ecimens represent about 66 natural families, and 500 
fall i 
their geographical r Leaving out of consideration suc 
species as are a rere we find that the area east of the 
tooth meridian produces fully twice as many different kinds of 
trees as the area to the west of it. There may be many more 
trees in the northern regions than in the southern from the stand- 
point of quantity, but the south surpasses the north in the variety 
of species; the southwest possesses over twice as many different 
kinds of ieee peculiar to itself as the northwest, while there are 
but seven ened peculiar to the northeast as — t the one 
hundred and eighty-one peculiar to the southe: 
Seven or nae different trees are peculiar to a higher slopes 
of the Appalachian mountain system and about an equal number 
are restricted to the Rocky Mountains proper. 
seven of the States have one or moré kind of tree pecu- 
liar to themselves and only two of these have a relatively large 
number. Pennsylvania has one, Alabama has one, Georgia has 
ur, 
tw ven a 
those peculiar to the other States. Of course, i boundary 
Nort! 
ariety of trees oa to anne is exttapedinasy: California, 
= far less than one-half as many, is ab larger than 
Florida and has all the natural conditions possible. It “extends 
