214 
LAKYNGOTOMY. 
operation, provided the weather be favourable, the animal may he exercised 
daily, though for another month it must be kept from work of every 
description. After this time it may he ridden or driven until breathing 
becomes audible; but, as the forcible entrance of air stretches the 
cicatricial tissue, and may endanger the success of the operation, it 
Fig. 114—Superior opening of the larynx and glottis of a “roarer” that died of pneumonia 
eighteen days after the operation. The lips of the wound resulting from ablation of the 
arytenoid were not sutured. P, Partly healed wound. 
should not be pushed beyond that point. Too early or injudicious work 
injures the animal and may produce failures. In summer it is well to 
turn the patient out to grass for six or eight weeks. 
Dyspnoea sometimes disappears in about eight weeks after the opera¬ 
tion, but the process of cicatrisation often takes longer, and sometimes 
roaring only ceases in four to six months after operation. 
This operation must not be expected to do more than render valuable 
