430 
EDITORIAL OBSERVATIONS. 
ances almost identical with what he had seen in the lungs 
of foreign horses after rough passages, even from Hamburg 
to Leith. In others there was no lung consolidation, but 
pure and very acute pleurisy; and in some, in its first 
stage, more redness without exudation. Then the cough of 
the living animals differed from that of pleuro-pneumonia 
contagiosa, being much more painful and pleural. The 
cattle had undoubtedly been subjected to some severe cause 
or causes of chest disease, and taking the whole circum¬ 
stances and post-mortem appearances into consideration he 
would hesitate very much before giving an opinion that the 
disease was identical with contagious pleuro-pneumonia. 
At present he was much rather inclined to think that 
the disease resembled what he had often witnessed, viz. 
sporadic pleuro-pneumonia arising from exposure, or even 
from traumatic causes, such as penetration of the lung 
by a foreign body. He had also frequently seen pleuro¬ 
pneumonia with well-marked pleural adhesions after an 
accidental introduction of food or medicine into the trachea.” 
We leave our readers to reconcile the curt denial of 
existence of any feature of pleuro-pneumonia which was 
written to Dr. Laidlaw with the admission contained in 
the speech to the members of the Lancashire Association. 
For ourselves we have only to express regret that their 
publication has made it necessary for us to refer to them. 
AMERICAN PORK AND TRICHINIASIS. 
During the last few weeks many statements have been 
made, more especially in the agricultural papers, relative to 
American pigs being not unfrequently affected with Tri- 
chinEe. These parasites reside in the flesh of the animals in 
their larval condition, but on entering the system of man by 
the eating of underdone pork, soon acquire sexual develop¬ 
ment, and ultimately give rise to a most serious disease, and 
not unfrequently to painful death. The subject has attracted 
so much public attention as to be brought before Parliament 
by Mr. King-Harman, the member for Sligo, who in answer to 
