Predisposing Causes of Roaring. 48 



Roarers, and some of which were rather celebrated. One 

 of his produce, Chasseur, and his grandson, Carnassier, 

 became Roarers ; the latter was the sire of the celebrated 

 Ganymede, out of a mare by Chasseur ; and Ganymede in 

 turn produced a Roarer bearing the parent's name. Among 

 the descendents of the latter, Quebec and Troarn are 

 particularly distinguished as hereditary Roarers ; among 

 the sons of Quebec nine, and of those of Troarn seven, 

 were affected. 



In England, the instances that might be quoted in sup- 

 port of hereditary predisposition are very numerous and 

 convincing. Youatt, in his Veterinary Lectures,^ delivered 

 in 1833, gives a rather notable case, occurring in Norfolk, 

 which is somewhat similar to that of Eastham in France. 

 He says : 



" There was a valuable stallion in Norfolk, belonging to 

 Major Wilson, of Diddlington. He was a great favourite, 

 and seemed to be getting some excellent stock ; but he was 

 a Roarer, and some of the breeders took alarm at this. 

 They had occasionally too painful experience of the com- 

 munication of the defects of the parent to his progeny, and 

 they feared that Roaring might possibly be among these 

 hereditary evils. Sir Charles Bunbury was requested to 

 obtain Mr. Cline's opinion on the subject. Mr. Cline was a 

 deservedly eminent surgeon of mankind ; he had exerted 

 himself in the establishment of the Veterinary College ; he 

 was an examiner of veterinary pupils, and therefore it was 

 supposed that he must be competent to give an opinion. He 

 gave one, and at considerable length : ' The disorder in the 

 horse,' said he, ' which constitutes a Roarer, is caused by a 

 membranous projection in a part of the windpipe, and is the 

 consequence of that part having been inflamed from a cold, 

 and injudiciously treated. A Roarer, therefore, is not a 

 diseased horse, for his lungs and every other part may be 

 perfectly sound. The existence of Roaring in a stallion 

 1 " The Veterinarian," 1833, p. 6R. 



