NASAL POLYPUS. 
199 
its way into the Fallopian tubes without being lost from the 
artificial aperture in the uterus. 
The second important question is, how did the embryonic 
development occur at first ? The check to the complete 
formation of the young ones was evidently defective nutrition. 
Nature’s artificial uterus, in the shape of false membranes, 
could not exactly answer the purpose. 
Lastly, we must observe as being very probable, that not 
one of the ova separated from the left horn escaped incubation. 
Fourteen is reckoned a good litter of pigs, and seven con- 
sequently would be the complete number of ova furnished by 
each ovary, supposing both to yield the same proportion. 
The left one, however, is probably the most prolific in 
animals. 
NASAL POLYPUS. 
By the Same. 
In the month of January, 1852, Mr. Bowman and myself 
were requested by Dr. Baker, of Howden, to attend a bay 
mare, twelve years old. Some months previously this mare 
had suffered from an attack of strangles, and at that time tra- 
cheotomy had to be performed to prevent asphyxia, from the 
enormous swelling of the throat which existed. After her 
recovery she went on very well for some time, when she was 
again taken ill, without any apparent cause. Her respiration 
gradually became much impeded, and this led to her becom- 
ing very excitable, so much so that she was threatened with 
suffocation if disturbed, even by simply opening the stable 
door. 
A discharge from the nostrils at once attracted our attention. 
From the near one in particular it was copious, white, and 
muco-purulent in its character. So abundant was it that it 
would often plug up the cavity ; when repeated washing vras 
required to relieve the patient. We noticed, also, that the 
air did not pass with freedom through this nostril, and, on 
covering over the opposite one, symptoms of asphyxia were 
at once produced. No external signs of disease of the bones 
were present, nor any evidence of a collection of pus in the 
nasal sinuses, as evinced by percussion, although, in fact, we 
had no difficulty in coming to the conclusion that some 
obstruction did exist in this nostril, and in it alone. The 
index finger was passed up the opening, and with little diffi- 
culty we succeeded in reaching a soft and slightly elastic tumor, 
