159 



Histo-chemically the white stripes prove to be infarcts of uric acid. The 

 pelves and cahces renales are dilated, and contain friable concrementa. 

 The whole kidney is moist and friable. The right kidney weighs 760 grams, 

 has a few infarcts and the same signs of stasis as the left. The connective 

 tissue around the aorta is gelatinously infiltrated as far as the arteria 

 mesenterica anterior, and covered with fibrine deposits which gradually 

 merge into the perirectal fatty tissue. From the anus cranially over a 

 distance of 60 cm. the walls of the rectum are 8 cm. thick, Ih cm. of which 

 belong to the thickened serosa, 3| cm. to the muscularis and submucosa, 

 the remainder to the mucosa. This coarse tube, with its thick walls, hardly 

 resembles a rectum ; its walls are full of small caverns containing a yellow, 

 quickly coagulating exudate ; the cavities are mostly situated between 

 the fasicles of the circular muscle. The mucosa is folded into six thick 

 swollen folds each 1-k cm. high, perpendicularly above these are narrow 

 small folds, all strongly hyperaemic. This diseased portion passes 

 gradually into the healthy rectum. The lymph glands are greatly enlarged, 

 soft and succulent. Some blood vessels of the mesentery and of the serosa 

 are thrombotised. The anal musculature is strongly infiltrated, its 

 muscle fibres are smothered by fibrous tissue. The abomasus is 

 oedematous in the folds, and hyperaemic. The duodenum contains bile 

 stained jelly-like contents, its mucosa is swollen and has a few hyperaemic 

 patches. The jejunum is slightly swollen and congested, in the ileum 

 the mucosa is slightly reddish or yellowish with adhaerint mucus. Coecum 

 and colon are swollen and contain many haemorrhagic patches. Spleen 

 50 cm. X 15 cm. X 5 cm., irregularly swollen, margins round, on section 

 dark red, slightly protuding. The liver has in an old cicatrix on the 

 diaphragm side in the middle lobe of the capsula Ghssoni a few fibrinous 

 flakes. Colour dark brown with groups of clay coloured lobuli, grates on 

 cutting, hard. Pleuj'a not folded, rather whitish, slight oedema. All 

 other organs normal. 



Pathological Anatomical Diagnosis: Pleuro-pneumonic inflamma- 

 tion of the rectum, of the tail, muscles of pelvis, perirectal and perianal 

 connective tissue, peritonitis fibrinosa, hydronephrosis, lymphadenitis 

 serosa, cirrhosis and fatty degeneration of the hver. 



Microscopical Lesions of the Kectum. 



Of all the layers of the intestine the mucosa is least altered, its 

 epithelium is nearly intact and consists for the greater part of niucous 

 goblet cells, whose granular contents are connected with the coating of 

 mucine by mucus almost free from epithehal elements. 



Here and there a sHght dissociation of the periglandular connective 

 tissue with a few swollen endothelial cells may be observed. The pro- 

 portional thickness of the mucosa and of the muscularis mucosae are, 

 however, absolutely normal. Under the epithehal layer are a few enlarged 



