AirnmiTix. 723 



capillary bronchitis, and generally diarrhcra. With the majority there 

 was tumefaction of certain joints, and particularly of the hocks. In 

 addition to the swelling', there were heat and pain, with ^a-eat lameness. 

 Not infrequently there were immense subcutaneous abscesses. Stupor 

 c\eutually set in, and the creatures looked as if half asleep; then coma 

 was soon manifested ; there was dysenteric diarrhcea, the dejections 

 being quite fluid, greyish-coloured, and extremely fcetid ; while the 

 visible nmcous membranes had often a yellowish tint, denoting the exist- 

 ence of icterus. 



In Lambs the symptoms are similar to those just enumerated. 

 Walley described them as follows : — A general febrile condition of the 

 system, as shown by the injected state of the mucous membranes; 

 quick, irritable pulse, irregularity of the bowels, hurried respiration, and 

 refusal to suck. The animal persistently lies, and if made to move does 

 so unwillingly and very stiffly, with the back arched, and placing as 

 little weight as possible on the afifected limb or limbs, which are 

 usually flexed, even in recubation, to remove pressure— this persistent 

 flexion ultimately leading to contraction of the tendons and distorted 

 limbs. If the disease continues, the muscles waste, causing the affected 

 joint to appear larger than it really is. The characteristic swellings 

 usually appear in the hocks, knees, and stifles, though they are not by 

 any means confined to these particular joints. In character they are 

 round, have a doughy feel, are intensely painful to the touch, very hot, 

 immovable, and increase in size. Thus they are like, yet dissimilar to, 

 rheumatismal swellings — like them in being located in the joints, and 

 being hard, round, and tender ; unlike them in being stationary, and 

 attacking the internal structures of the joints — the primary lesions in 

 rheumatism being confined to the external ligamentous structures of 

 these organs, and when attacking the interior of the joints formative 

 processes are evidenced; while in "joint-ill" degenerative processes 

 predominate. As the disease progresses, and life is prolonged, the 

 animal becomes emaciated, diarrhoea sets in, the wool falls olT, and a 

 variety of changes are detected in the joints. Erysipelatous inflamma- 

 tion makes its appearance in various parts of the skin of the body, 

 especially at the external orifice of the urino-genital organs, at the 

 postero-inferior part of the abdomen, and round the navel, in the latter 

 position constituting " navel-ill." Local dropsies are frequent under 

 the jaw and other dependent positions — as the navel, which is said to 

 be pocked. If blood is abstracted during life, or collected after death, 

 and set at rest for a time, it deposits a peculiar dark-coloured, grumous 

 mass at the bottom of the vessel, composed, so far as can be seen by 

 the microscope, of altered blood-cells. This deposit lacks the firmness 

 of the other parts of the clot, and bears a close resemblance to half- 

 fermented damson pulp. Bacteria are developed in the blood shortly 

 after death, and long before any putrefactive odour can be detected. 

 Al-'irption of pus into the blood — py.rmia — is indicated by elevation of 

 tl.' temperature, foctor of the breath, diarrhoea, dark yellowish-red 

 colour of the mucous membrane, gnashing of the teeth, rigors, and hectic 

 fever — the latter being present also in ulceration of the joints. 



In the latter, the swellings become softer and very irregular in outline, 

 from bulging of the more flaccid portions of the synovial membrane and 

 skin : and, from portions of the effused lymph becoming liquefied, 

 fluctuation is produced — other portions remaining solid. The fluctuating 

 swellings extend along the thecae or sheaths of the tendons — two joints 



