8 



(i.) If the course of the disease be towards pleurisy, after 

 the crepitus is noticed, other sounds couveying the idea 

 of sawing are emitted. This arises tlirough the pleurae 

 becoming iuilamed and covered with lymph, which dries 

 on their surface ; and their coats being thus rough, 

 uneven, and dry, emit these sounds on coming into con- 

 tact, instead of gliding smoothly and noiselessly over 

 each other as they do when they are free from disease. 

 These sounds diifer from the crepitus in another 

 respect— they are heard during both inspiration and 

 expiration. 



(5.) As the disease advances towards termination the sounds 

 become very equivocal, resolving themselves into a deep 

 gurgling and irregular noise, caused by the cavity of 

 the chest becoming filled with serum, 



(2.) — Percussion. 



This is another mode of ascertaining whether or not an animal, 

 which exhibits no outward symptoms of being so, is diseased — 

 i.e., by striking the side of the chest with the knuckles, or any 

 other hard substance of similar weight. 



On striking the chest in this way, when the lung has become 

 solidified, and only when it is so, the sound emitted is dull and 

 flat, and not sonorous and booming as it is when the chest and 

 its organs are free from disease. 



The same dull, dead sound is elicited when the animal is 

 affected with pleurisy, and the extent of the gathering of water 

 in the chest can be traced by the extent to which the chest fails 

 to emit the healthy sounds when tested in this way. 



5. — Inqttiet in Great Beitain. 



"With the view of eliciting information from the Veterinary 

 Profession in Great Britain and Ireland, with regard to pleuro"- 

 pneumonia, and the best mode of dealing with it in Australia, 

 I addressed a letter, of which the following is a copy, to the 

 London " Veterinarian" : — 



(1.) — Letter to " Veteeinaeiax." 



" The Editors of ' Veterinarian,' London. 

 "Gentlemen, 



" Having been instructed by the Government of New South Wales 

 to collect all the information I can obtain in England and on the Continent 

 with respect to the infectious or contagious diseases presently affecting or 

 likely to affect the live stock of the Australian Colonies, and as pleuro- 

 pneumonia is now prevalent not only in New South Wales but also in all the 

 other Australian Colonies, I am anxious to obtain the opinion of the Veter- 

 inary Profession in Great Britain as to the beat mode of dealing with that 



