404 
R. H. HARRISON. 
the membrana nictitans covering a little more than half of both 
eyes, very red in color, greatly tumified, and giving rise to serious 
conjunctivitis, and a continual flow of tears. This state had been 
present for over a year; the membranes,at first pale and slightly 
swollen, had slowly increased in size. Several oculists and vet¬ 
erinarians had been consulted, and an operation was considered 
dangerous, as it would result in loss of sight. 
An operation was advised and finally consented to ; it con¬ 
sisted simply in grasping the enlarged membrane with bull-dog 
forceps, and making the entire removal with the curved scissors 
at one cut. The slight hemorrhage following the operation was 
readily checked with cold water; the after treatment was a simple 
wash of chloride soda 3 i* to Oi. water. A few days afterwards, no 
one could tell that an operation had been performed. 
Having the tumors examined under the microscope by a med¬ 
ical friend, the report was: “ The tumor shows a marked in¬ 
crease in its epithelial covering, being about eight times thicker 
than normal. There is a hypertrophy, and increase in the num¬ 
ber of mucous and lymph follicles of the conjunctiva. At the 
thickest part of the tumor, noted great hypertrophy of epithelium 
with alveoli filled with epithelial cells.” Consider it a true 
epithelioma. 
The second case was a brindle bull dog, two years old, affected 
with enlarged membrana nictitate for several months, producing 
similar symptoms as mentioned in tne former case. The appear¬ 
ance of the tumors was similar, except that in this case the thick¬ 
ness was more uniform, and not involving one part as before. A 
similar operation was performed, the case doing equally as well. 
The examination of these tumors resulted in their being de¬ 
nominated “ Enchondroma.” “ The hypertrophy of the mucous 
membrane was absent, the alveoli filled with epithelial cells want¬ 
ing, but a marked increase in the cartilage cell formation was 
very apparent.” 
Case No. 4 —Porcupine Quill in Membrana Nictitans .—A 
hound was brought for observation, “ that had a sore eye.” It 
had been attended by another veterinarian, and astringent washes 
prescribed. 
