39 



under tlie lower eye-lid. The intra-orbital cavity is filled with cheesy matter. 

 The palate is pressed down towards the mouth cavity. The mucous mem- 

 brane of the nares is gray and swollen. The nasal cavities are filled up with 

 a stinking, putrid, slimy secretion. A small pseudo-membrane is located in 

 the pharyngeal membrane. Liver is enlarged ; spleen small, and contains a 

 few coli-like bacteria. 



In Pigeon No. 7 no nasal catarrh set in. The putrid secretion from the 

 left eye smelt offensively. Conjunctival catarrh and swelling of the eye-lids 

 had disappeared in six weeks. Inoculated a third quantity of a virulent cul- 

 ture, with the same severe reaction as with the second. 



Pigeon No. 10 suffered from a severe putrid catarrh of the conjunctiva for 

 two months after the inoculation. In the latter stage of the disease, severe 

 diarrhoea set in. 



Pio-eon No 11 had been inoculated the second time with i c.c. in the pleural 

 cavity.^nd with a few drops in the right upper eye-lid. General condition was 

 very'much disturbed at the beginning; later, it became better, only to be- 

 come worse again. A putrid catarrh of the right conjunctiva developed, and 

 a solid tumor formed in the depth of the upper lid. 7 days after the second 

 infection the pigeon was dead. (23rd of March). 



Post-Mortetn : From the eye-lid. much solid, cheesy matter was extracted. 

 The conjunctiva was gray and swollen : the cornea turbid, but smooth ; the 

 corpus vitreum was partly liquefied, turbid, and contained pieces of the des- 

 troyed retina ; the periorbital tissue has a few gray spots of pus. The central 

 part of the right lung is completely congested, red and contains a small, putnd 

 centre. The pus was liquid, with an offensive smell. 



Pigeon No. 15. This case was similar to that of Pigeon No. 11. The 

 bird died 5 days after the second inoculation. 



Pigeon No. 9. Was inoculated with a virulent culture of the roup bacillus 

 by rubbing this on the mucous membranes of the mouth and nostrils. (5th of 

 March). 



Small croupous inembranes appeared in the mouth. Genera! condition 

 was much changed. Five days later the pigeon was killed. 



Post-Mortem : The lower parts of the nasal cavity coitamed much putnd 

 secretion. The left infra-orbital cell was filled up with a solid, cheesy mass. 

 The mucosa of the nose was gray, with small blood extravasations at several 

 places ; a cheesy mass had formed, in the submucous tissue underneath the 

 tongue. Near this place, the mucous membrane bears a small diptheritic spot. 



Pigeon No. 12. Was inoculated 14th of March with a roup culture (fresh- 

 ly isolated from the nares of fowl No. 23), in the mouth, nose and pleural 

 cavity. General condition was a little disturbed the next day, when a croup- 

 ous membrane formed between larynx and base of the tongue. Later on, 

 other pseudo-membranes appeared. 



^Slarch 18. — Near the left angle of the beak, a new croupous membrane has 

 formed, and the left nostril was partly blocked up, with an offensive, gray se- 

 cretion. General condition bad. The bird lies most of the time on the 

 bottom of the cage in a somnolent condition. 



