150 



of troclianter, joints increased and mixed with fibrous filaments. In tlie 

 right carpal joint increase of synovia, two small defects in the cartilage. 

 Fetlock joint normal. Left elbow joint capsule infiltrated thickened, 

 synovia sHghtly increased. The left joint of acetabulum, synovia increased 

 with fibrous flakes. The hgamenta surrounded by haemorrhagic and 

 slightly swollen tissue. Left knee joint, synovia increased, capsule dis- 

 tended, strongly infiltrated, the intermediate cartilage thickened and 

 hyperaemic tendovagina muscuh quadricipis distended with a yellowish 

 liquid. Right tarsal joint, synovia increased, cartilage normal. Left 

 knee joint, synovia slightly increased, capsule infiltrated, the neighbour- 

 ing intramuscular tissue shows the usual lesions. Left praescapular 

 lymphatic gland enlarged to five times normal size, with haemorrhagic 

 infiltration of the sinus. Capsule thickened 1-3 cm., lympoglandulae 

 cervicales caudales swollen and haemorrhagic. 



Diagnosis: Myositis et synovitis serofibrinosa specifica. 



CASE 4. — Ox 688 was injected at the tip of the tail with 0-5 c.c. of a 

 pure culture of pleuro-pneumonia. After fourteen days a rather small 

 local swelling at point of injection appears, when a small piece was removed 

 -by operation. 



Macroscopically the piece of the tail showed a very loose structure 

 of the diflierent tissues, in which a lymph-hke fluid had collected. Between 

 muscles and subcutis were small lymph spaces, surrounded by dark, 

 bloodstained walls. The structure of the muscles was loose, they were 

 discoloured, often more or less grey or white. The whitish parts were 

 harder and more densely fibrous. 



CASE 5. — Ox 675 injected with 2 c.c. pleuro-pneumonia culture 2 cm. 

 above the tip of the tail. Temperature rises. The lower end of the tail 

 was amputated on the sixteenth day and histologically examined. 



Macroscopically the intramuscular tissue of the musculus coccygeus 

 was broadened, a fibrous tissue replaces muscular tissue in part, in places 

 small thrombus, bone normal. 



CASE 6. — Ox 670, injected on the right side of the dewlap with 2 c.c. 

 Martin's boulHon culture which was made by rubbing in a mortar fibrine 

 fiakes obtained from the talo-crural joint of calf " Dalton." On the 

 eighth day fever and swelling at the point of injection were observed, 

 on the twelfth day polyarthritis. The animal was slaughtered in collapse 

 temperature. 



Post-mortem Report : On the dewlap a tumour 20 cm. X 10 cm., 

 the skin above it is taut, the consistence hard, only in places fluctuating 

 and oedematous. On section an enormous quantity of clear yellow fluid 

 flows from the spongy but tough tissue. In -many places are small 

 dilations of the lymph vessels and large and small thrombus of the blood 

 vessels. The muscles (mm. pectoralis profundus, brachiocephalieus, 

 sternocleidomastoideus, and biceps brachii) are changed, on section tough. 



