352 On the Salivary Defluaions in Horses. 
‘These experiments | considered. sufficient to prove 
that the Euphorbia maculata would produce salivation. 
And Iam induced to think for reasons that I shall hereaf- 
ter mention, that it 1s the general, if not the only 
cause of it. 
There are three species of euphorbia common in 
our fields : the maculata, caniscens and corolata, of Lin- 
neus. There are more species of euphorbia natives, and 
some exotic species now flourish in our country, but 
their peculiar habitudes confine them to certain dis- 
tricts. Of the three species above mentioned, either 
would probably cause salivation if masticated : but the 
peculiarities of the maculata render it the only one like- 
ly to be eaten by horses. None of them will be eaten 
if not so situated or presented, as to be taken into the ani-_ 
mal’s mouth along with some agreeable grass, as clover. 
The corolata is a large plant towermg above the gras- 
ses, and therefore easily avoided. The caniscens is an 
humble plant attaching itself close to the ground without — 
elevating any of its branches, and seldom flourishing 
among the grasses; but generally confined to open 
grounds, or cornfields road sides &c. on these accounts 
it is seldom eaten. ‘The maculata delighting in the well 
cultivated clover ground, and when closely surrounded 
by. the clover attaining to about the same height, and 
sending off many slender spreading branches, it is very 
liable to be taken in with the clover by the larger mou- 
thed animals. Whether this species of euphorbia, has 
flourished for a length of time in this part of the coun- 
try, or has but lately migrated into it, I have not ascer- 
tained, but in either case, its having but recently intrud- 
ed itself into the pasture fields can be easily accounted 
