ROARING. 53 



the nostrils; a piece of ribbon within the chamber of the nose ; 

 a molar tooth displaced, and thrust into the same situation, 

 producing roaring ; but for my own part I never met with 

 any cases of the sort. 



Pulmonary compressiOxN ? — Hurtrel d^Arboval includes 

 both pleurisy and peripneumony among the causes of the 

 roaring : is such produced by compression or bronchitis ? 



A question has arisen, whether or not we are warranted in 

 regarding the lungs as the seat of roaring. The subject 

 being one on which individual experience is necessarily con- 

 tracted, it is only by an appeal to practitioners at large that 

 such a question can be satisfactorily answered. In my own 

 mind theory would seem to reply in the negative : the fol- 

 lowing case, however, makes me stagger in this opinion. The 

 case occurred to my late much respected father. 



A horse was treated for violent roaring. The neck was 

 repeatedly blistered; it was even fired; but no relief was 

 obtained. So painful was it to hear the animal roar, when 

 he was even gently led out of the stable, that tracheotomy 

 was had recourse to : but without avail. At length, seeing 

 the animal continued to suffer so much pain and distress in 

 breathing, and that the case appeared altogether incapable 

 of being relieved, it was determined to destroy him. On 

 examination, no thickening of the laryngeal or tracheal 

 membrane appeared, nor, in fact, any other disease of those 

 parts. But the lungs were hepatized throughout their sub- 

 stance, and the smaller divisions of the bronchial tubes in 

 many places so compressed that they were hardly pervious. 



From the circumstance of the operation of tracheotomy 

 not having any effect in this case, it is obvious enough the 

 cause must have existed below, i.e. within the bronchial tubes : 

 there cannot, therefore, it would appear, remain any further 

 question about the seat of roaring occasionally being the lungs. 

 In confirmation of this stands the testimony of Mr. James 

 Turner, who says, "I have occasionally ridden some roarers, 

 in which I have been perfectly convinced that the noise 

 issued from obstructed bronchi within the lungs themselves/^ 



Nervous influence. — In the year 1826, M. Dupuy pub- 



