16 BOARD OF AGRICULTURE. 



pericardium and the diaphragm are black, thickened, and disposed to 

 gangrene." 



Dr. J. M. Kreutzer, in a valuable work on pleuro-pneumonia, pub- 

 lished at Erlanger, in 1854, says: "Still later the lungs are found 

 enlarged and their weight increased. They are firm, compact, liver- 

 like, and there is an absence of crepitation. The surface is not uniform, 

 but divided into irregular portions by numerous broad, yellowish white 

 lines. The cut surface presents the same marbled appearance as before,' 

 caused by the change in the interlobular tissue, which is sometimes from 

 one to two lines thick ; with these the rec? intervening tissue contrasts 

 strongly." 



A very interesting paper on the disease designated pleuro-pneumonia 

 cpizootica in cattle, by P. Verheyen, Professor of the Veterinary School, 

 Brussels, translated from the "Journal Veterinaire de Belgique," by 

 Mr. W. Ernes, says, alluding to experiments made by Vix : " But the 

 characteristic sign which distinguishes the epizootic pleuro-pneumonia 

 from all other inflammation of the viscera, namely, the marbled aspect, 

 was present." 



Professor Hertwig, of Bei4in, in describing a tumor, Avrites: "All 

 this mass was indurated, and oftered much resistance to the knife; 

 notwithstanding which the muscles were easily divided, and these pre- 

 sented the same marbled appearances as lungs which had undergone the 

 disorganization pecidiar to the pleuro-pneumonia epizootica." 



In a lecture delivered before the Royal Agricultural Society, England, 

 on the anatomy, physiology and pathology of the organs of respiration 

 and circulation, with especial reference to the nature of pleuro-pneumonia 

 in the ox. Professor Simonds, of the Royal Veterinary College of Lon- 

 don, says : " The name given to the affection to which I am about to 

 allude, by almost universal consent, is pleuro-pneumonia. I object, 

 however, to the malady being thus designated ; and if my view of its 

 nature be correct, a less appropriate name could scarcely have been 

 selected. 



"The amount of deleterious matter received at each inspiration 

 appears to be insufficient to interrupt at once the functions of the lungs ; 

 for were this the case, death would speedily occur from asphyxia; 

 wliereas we have constant proofs that the disease we are considering is 

 partial in its attacks and insidious in its nature, making its way stealth- 

 ily, being very often unobserved until it has made great inroads in the 

 constitution. This character of the affection is alone sufficient to create 

 a doubt of its being inflammatory, for inflammation of the lungs, even at 

 if.s commencement, is marked by iinmistakable indications of ill health. 

 The absence of the ordinary symptoms of pneumojiia, together with the 

 peculiar cltanges of the lungs, have satisfied me that pleuro-pneumonia is 



