8 BULLETIN 575, U. S. DEPARTMENT OF AGRICULTURE. 
of Fowler’s solution, while cattle may be given hypodermic injections 
of strychnin. These doses should be continued for at least a month. 
Care should be taken in the use of strychnin, as locoed animals are 
very sensitive to its use. It is better that doses for cattle should 
not exceed three-twentieths or four-twentieths of a grain. Never, in 
the case of a large animal, should more than one-half grain be given. 
In the case of locoed sheep upon the range, if the number is small, 
it is not profitable to spend any time or trouble with them. It is 
better to slaughter them immediately, as a locoed sheep will teach 
others the same habit. If, however, a number of locoed sheep can 
be separated and, like the cattle, be turned into an alfalfa field, 
most of them are likely to recover. Sheep may be helped by doses 
of one-twentieth grain of strychnin, but ordinarily, on account of the 
small value of individual animals, it is not profitable to spend the 
time which is necessary to insure their recovery. 
In handling animals in a loco country it should be remembered 
that all domestic animals are more or less imitative, and loco eaters 
are likely to teach others to do the same thing. Therefore, so far 
as possible, all animals that have acquired the habit of loco eating 
should be separated from the others. 
LARKSPURS. 
A great many species of larkspurs grow in the western stock 
ranges, and they are widely distributed throughout the mountain 
regions which are used for pasturage. These plants when in blos- 
som are very easily recognized by the peculiar form of the flower. 
Before blossoming there are a few plants with which they may be 
confused by a person who is not versed in botany, but it is not 
particularly difficult for the ordinary observer, after a little experi- 
ence, to recognize larkspurs in all stages of growth. While there is 
a large number of species, all may be grouped under the two general 
heads of tall larkspurs and low larkspurs. 
TALL LARKSPURS. 
The tall larkspurs in their maturity reacn a height of 4, or even 
6 and 8 feet. They are perennials and grow in great abundance 
in the high mountain regions, ordinarily preferring damp and shel- 
tered places, such as are found in mountain valleys and under trees. 
Under some circumstances, however, they may grow in considerable 
abundance in the open. All the tall larkspurs agree in the form of 
the leaf, which is well illustrated in Plates VII and VIII. The 
flowers, with the spur from which the plant gets its name, are very 
characteristic in their form and in most species vary in their colors 
through various shades of violet, blue, and purple. Before the 
plants are mature the leaves may be confused with those of the 
