140 Veterinary Medicine. 



white hue with here and there a pink streak indicating the posi- 

 tion of some unchanged muscular fibre. When placed under the 

 microscope the healthy elements of the muscular fibres (sarcous 

 elements) are seen to be replaced by granules of fat. The nerve 

 (recurrent) is not only visibly wasted' but its internal white sub- 

 stance (white substance of Schwann) can no longer be recognized 

 and it approximates closely in character to a filament of ordinary 

 white fibrous tissue. 



17th. Muscular paralysis due to other causes and even located 

 in different parts has been known to give rise to roaring. 



Goubaux and others have noted the occurrence of roaring 

 from paralysis of one nostril, alike when the loss of power was 

 special to the nasal muscles or common to all on one side of the 

 face. 



Roaring apparently from paralysis of the laryngeal muscles has 

 been seen frequently in animals fed on the seeds of leguminous 

 plants and specially of the Lathyrus Cicera {Lathyrus Sativus 

 Stendel) . The whole family of the Leguminostz is open to suspi- 

 cion as occasionally containing a poisonous principle capable of 

 inducing paralysis in animals fed on them, f^^ Lathyrus Sativus 

 induces paralysis in man and the domestic animals in some parts 

 of India (Sleeman, Irving). The common cultivated tare (Vi- 

 cia Sativa) is well known to induce general paralysis, commenc- 

 ing with the hind extremities, when fed to horses at the period of 

 ripening in Great Britain. In France the chick vetch (Lathy- 

 rus Cicera or Sativa) has been repeatedly noticed to lead to the 

 development of roaring apparently from paralysis of the laryngeal 

 muscles. Horses fed on 17 lbs, daily (straw and seeds) were at- 

 tacked with roaring in five days. They gained in flesh and vigor, 

 had a smooth shining coat and supple skin, and standing at rest 

 presented nothing amiss, but after ten minutes trot they were 

 seized with roaring and if not stopped they soon fell to the 

 ground, with symptoms of impending suffocation, (Delafond). 

 Horses fed heavily on the winter vetch with cut hay 

 and molasses were attacked with roaring if gently exercis- 

 ed for one or two minutes. It came on suddenly and threat- 

 ened instant suffocation. One horse fell and lay half an hour in 

 a frightful state of dyspnoea. More commonly they recovered 

 after a few minutes rest. In the intervals no disturbance of 



