14 LEHMAN'S POULTRY DOCTOR. 



ute air passages, which acts as an antiseptic and is 

 perfectly harmless. 



ROUP AND DIPHTHERIA. 



Roup and diphtheria were by some of the older 

 writers treated as two different diseases, but here 

 they will be classed under the same head. 



It is an infectious, catarrhal condition of the mucous 

 membranes of the throat, nose, eyes, sinuses (cavities 

 in the head), etc. 



Symptoms: The onset of roup is very similar to 

 cold and simple catarrh, such as sneezing, watery 

 eyes, dull appearance and difficult breathing, as they 

 often breathe with the mouth open; in fact, the symp- 

 toms all along are very similar, except that simple 

 catarrh will generally affect only here and there a 

 fowl, and the outbreak will soon cease when the cause 

 is sought and removed and such treatment given as 

 directed. 



But roup will go from bad to worse and spread 

 through the flock very rapidly before active measures 

 are taken to check it. 



The most characteristic symptoms are, therefore, 

 discharge from the eyes and nostrils; swelling or 

 bulging out of the eyes, often to an enormous size; 

 diphtheretic membrane forming in the throat, which 

 often has a very offensive odor; there is great pros- 

 tration, the feathers are rough, the appetite poor, 

 comb and wattles dark and frequently the fowls drop 

 dead from the roost, probably from suffocation. There 



