538 THE HORSE. 
food should be of a less stimulating quality, and care should be taken 
that regular exercise is allowed every day. The stable should be kept 
cool, and of course attention should be paid to cleanliness both of the 
foot and the litter. As to local remedies, they must not be of the stimu- 
lating kind, which will suit the thrush from decomposition, or that, 
presently to be described. The foot should be placed in a bran poultice, 
and kept in it for some days, till the united action of the local and 
general treatment have reduced the inflammation. After a few days it 
will be well to dress the frog with tar ointment, or the poultice will do 
more harm than good, by causing the decomposition of its horny covering, 
and indeed it is seldom that this wet application should be employed for 
more than a week. After this time has elapsed, all the good to be 
derived from it has been accomplished, and the subsequent treatment 
may generally be effected by attention to the health, and dressing the 
frog with tar omtment. Sometimes it may be necessary to employ a 
slight stimulus, and then the solution of chloride of zinc will be found 
to be the best. 
THE THIRD KIND OF THRUSH occurs in contracted feet, and is due to the 
same cause, namely, chronic inflammation of the sensible frog, produced 
by overwork, aided in many cases by neglect in shoeing. There is a 
tendency to the secretion of unsound horn over the whole foot, sometimes 
too thick and hard, and at others of a cellular structure, without sufficient 
strength to bear the pressure of the road. The horny frog generally looks 
shrunken and withered, and in its cleft there is a foul discharge, on wiping 
which out a soft spongy matter may be seen at the bottom, which is the 
sensible frog itself, but in a diseased condition. In bad cases, the sides 
of the horny frog have separated, and even the toe is sometimes deficient 
of its covering ; bat generally the horn has only disappeared in patches, 
and there are tagged portions remaining. The disease here is of tao 
chronic a nature to be easily cured, and ? there is much disorganization 
of the laminze it will be almost impossible to effect a perfect cure. The 
first thing to be done is to clear away all the ragged portions of horn, so 
as to be able to reach the sensible frog. Some tow is then to be smeared 
with the following ointment :— 
Take of Ointment of Nitrate of Ee 50 Oo 9 oc Al obepyeinunn. 
Zine Ointment . . Hob ob o6 oo oo Loe 
Gems 6 6 6 Wo 5 5 oo 5 0 oo ol Sh Glee | Mille 
and pressed into the cleft of the frog, where it can best be retained by a 
bar shoe lightly tacked on, and in this case taking its bearing on the heels 
and not on the frog. Sometimes a wash answers better than a greasy 
application, and then a strong solution of the chloride of zinc may be 
employed, about six grains to the ounce of water. Tow dipped in this 
may be applied in the same way as with the ointment, and either one or 
the other should be re-applied every day. As the new horn grows, it 
must be kept supple by tar ointment, and until it is fully developed the 
bar shoe should be kept on, applying some degree of pressure by means 
of the tow, which should be stufied in so as to compress the frog, begin- 
ning with very light pressure, and, as the horn increases in substance, 
augmenting it in proportion. By attention to these directions a thrush 
of this kind may be cured, if the foot is not damaged throughout, and 
evon the frog may be restored to a comparative state of health. 
