54 Veterinary Medicine. 



to actinomycosis. There is usually a circumscribed yellowish 

 central mass made up largely ot the mycelium, with more or less 

 surrounding red hepatization. At times the exudate is so abun- 

 dant as to distend the interlobular connective tissue, as in lung 

 plague. Haemorrhagic centres several inches in diameter are 

 common in the lungs and the bronchial and tracheal mucosa is in 

 a haemorrhagic condition. In .some instances the fungus has been 

 found occupying old standing ulcers of the mucosa and the 

 interior of vomicae and ruptured absces.ses. The air cells in the 

 affected parts are usually filled with mycelium, and this appears 

 to be a common starting point for the local growth. The adjacent 

 bronchioles are filled with leucocytes, blood globules, and fibrin- 

 ous coagula, and the epithelium has been more or less destroyed. 



Symptoms in Dogs. A case described by Rivolta under the 

 name of mucorimyces cams familiaris was probably aspergillus. 

 The animal had a dry, frequent cough and accelerated respira- 

 tion and lameness in one hind limb. There was generalized sar- 

 coma in the kidneys, lung, spleen and womb. In the centre 

 of each nodule were filaments and round cells or spores con- 

 nected in chains. No cultures nor inoculations were made so 

 that the true nature of the fungus cannot be confidently affirmed. 



Prevention. This will consist largely in the hygiene of the 

 animals and buildings. Catarrhal and other affections of the 

 respiratory mucosa should be treated to remove the concurrent 

 cause of local debility and the tone of the general system should 

 be kept as high as possible. Fodder suspected of containing the 

 aspergillus should be discarded or watered with lime water or a 

 solution of hyposulphite of soda. When it can be cut and boiled 

 it may then be safely fed. Grain or mush may also be boiled. 

 The stables or other buildings should be well aired and lighted, 

 and their sites thoroughly drained. The walls, floors and ceilings 

 should be treated with live steam or boiling water, or they may be 

 covered with whitewa.sh made from freshly burned quick-lime, or 

 chloride of lime, or with a solution of mercuric chloride (1:500), 

 or blue stone (1:200), and in addition they may be fumigated 

 with sulphurous acid or chlorine gas. All affected animals should 

 be excluded and accessions to the flock or herd critically examined 

 before admission. This is above all necessary under the cram- 

 ming system of feeding, and for the sake of the attendant as well 



