REPORTS OF CASES. 
841 
illary ducts, and are usually caused by a foreign body working 
up into the duct, which forms the nucleus, such as hay, corn 
grain or oat grain, etc. Around the nucleus gather the salts of 
the saliva, forming rounded or elongated calculi, which may 
block the duct. There may be several calculi in one duct. 
REPORTS OF CASES. 
Careful observatio7i makes a skillful practitioner^ but his skill dies with hun. By 
recordifig his observations, he adds to the knoivledge of his profession, and assists by his 
facts in building tcp the solid edifice of pathological science. 
IMMOBILIZATION IN CASES OF OPEN JOINTS. 
By W, F. Derr, V. S., Wooster, Ohio. 
In the summer of 1896 a bay horse, six years old, turned out 
to pasture, got into a barbed-wire fence in such a way that the 
extensor pedis and metacarpus of the left knee were severed and 
the joint laid open over its anterior aspect to the extent of three 
inches. 
x\t the time of my seeing the case it was about ten hours 
after the accident. He was standing in the stable with limb 
flexed, so that you could see into the carpal articulation. 
A blacksmith being close by, I took the measure of the foot, 
had a shoe made to extend well back from the heels with holes 
in, and a brace made to fit the shoe and extend up leg, with a 
clasp to fit around the arm below the elbow joint. In the mean¬ 
time, while this was being done, I kept a continuous spray over 
the wound of carbolic acid and tincture of iodine, one of each 
to 200 of v/ater, which was kept up for quite a while, dusted the 
wound with boracic acid and iodoform, and closed with quilled 
suture. I then applied bandages, from the ankle well up towards 
the elbow, laying plenty of absorbent cotton over the lacerated 
parts, fastened the forked brace to the foot and leg, held in place 
by bandages, and placed the animal in slings, also at the same 
time I put it under constitutional treatment ; had a man stay 
with the case the first night for fear of trouble with the immov¬ 
able condition of the limb, also to watch it while put in slings. 
Next day the animal was doing well. I thought it best not 
to disturb it, and therefore left the case alone for two days, at 
which time there was considerable serum with coagulated syn¬ 
ovia making its way through the dressings. 
Before taking off the brace and dressings, I prepared myself 
