ALPHABETICAL SUMMARY. 487 
draw the canula, and in two hours again puncture the chest. Afterward 
the food must be prepared, and a ball administered night and morning, 
consisting of iodide of iron, one drachm; strychnia, half a grain; sul- 
phate of zinc, half a drachm; extract of gentian and powdered quassia, 
a sufficiency. 
IMPEDIMENT IN THE LACHRYMAL DUCT. 
Cause.—A hay-seed or other substance getting into and becoming 
swollen within the duct. 
Symptom.—Swollen lid and copious tears. 
Treatment.—Inject, forcibly, a stream of water up the duct. 
INFLUENZA. 
Cause.—Unknown; but suspected to be generated by close stables. 
It is also episotic. 
Symptoms.—Weakness and stupidity; local swellings; heat and pain 
in the limbs. Loss of appetite; rapid wasting; every part of the body 
is diseased. Youth most exposed, but no age exempt. Spring-time 
the general season, but an attack may ensue at any period of the year. 
The following symptoms are somewhat uncertain: Pendulous head; 
short breath; inflamed membranes; swollen lips; dry mouth; enlarged 
eyelids; copious tears; sore throat; tucked-up flanks; compressed tail; 
filled legs; big joints; lameness and hot feet. Auscultation may detect 
a grating sound at the chest, or a noise like brickbats falling down stairs, 
within the windpipe. When the last is audible, there is always a copious 
discharge. Sometimes one foot is painful; purgation has been seen; 
but constipation is generally present, and the horse usually stands 
throughout the disease. Always suspect influenza when it is in the 
neighborhood, and the membranes are yellow or inflamed. 
Treatment.—Move to a well-littered, warm, loose box. Suspend a 
pail of gruel from the wall; change the gruel thrice daily; sprinkle on 
the tongue, night and morning, calomel, one scruple; wash this down 
with sulphuric ether, one ounce; lJaudanum, one ounce; water, half a 
pint. If weakness increases, double the quantity of ether and of 
laudanum. When the pulse loses all wiry feeling, and the discharge 
becomes copious, give from the hand some bread, on which there is a 
little salt; when the cough appears, give a pot of stout daily. Beware 
of purgatives or active treatment. 
