130 QUARTER-ILL. 



gland, but by far most frequently in either the shoulder or the 

 loins. 



M. Hess has observed that the tumour forms more often on 

 the right side of the animal than on the left, but he can give 

 no reasons why this should be so. 



The tumour is found in regions which abound in muscular 

 tissue, and where the connective tissue is loose, and seldom in 

 the region of joints and tendons, and where the tissues are firm. 

 These tumours are ill-defined, and have no limiting mem- 

 brane. Externally they may not appear of great size, but when 

 carefully examined they are found to extend deeply into the 

 subjacent tissues. 



At first hot and painful to the touch, they rapidly become 

 cold, insensitive, and dead in their centres, and when then 

 handled are found to crepitate or crackle, due to the presence 

 of evolved gases under the skin ;• their peripheries extend 

 and penetrate into the surrounding parts until they attain 

 enormous dimensions. 



If incised, they discharge a dark-coloured and foetid fluid, 

 succeeded by a flow of frothy, citron-coloured serosity. 



As the disease progresses the tumour or tumours enlarge, 

 gases are evolved beneath the tissues, the animal evinces great 

 distress, the breathing becomes greatly hurried, the tempera- 

 ture rises to a great height, the pulse beats at 120 to 130 per 

 minute, feebly and intermittently; the expression of the face 

 becomes haggard, tympanitis (hoven) ensues, faeces are passed 

 involuntarily, the animal falls, becomes unable to rise, is 

 attacked by fits, and either dies during one of these or 

 immediately after its cessation. 



In the last stages the temperature falls below the normal, 

 and decomposition sets in even before death. 



There are, however, cases which do not exhibit the ordinary 

 S}nmptoms to commence with. In some the disease begins 

 as colic, or some digestive derangement ; and in others there 

 may be lameness and. stiffness, but no appearance of a tumour 

 anywhere. On post-viortevi examination, the animal is found 

 to be enormously swollen, due to the evolution of gases into the 

 stomachs, intestines, and in the tissues under the skin. Bloody 

 froth is seen issuing from the mouth, nostrils, and anus. On 

 cutting into the carcase, gases of a bad odour escape, and are 

 often accompanied by spurts of dark blood or yellow serosity. 



The tumours are found to be black in their centres, and the 

 muscles in their immediate neighbourhood to have the same 

 colour. The further we proceed from the centre of the tumour 

 the lighter the colour becomes, until, instead of being black, it 

 is black and yellow streaked, then pinkish, and then surrounded 

 by a citron-coloured portion. 



