58 INFLUENZA. 



tions are quickened, more so tlian the pulse ; the animal has a 

 pinched and anxious expression of the face ; the nostrils are 

 dilated ; dyspnoea is marked, or it may be distressing ; the 

 sides heave, and the patient is disposed to place his head m 

 the direction where fresh air is most likely to be encountered. 

 The appearance of the visible mucous membrane is entirely 

 different from what is met with in the simple uncomplicated 

 form. The colour of the nasal membrane will vary from a 

 bright purple to that of a dull leaden hue ; and as the disease 

 advances, it will take on a yellowish-purple colour, probably 

 studded with petechias, and streaked with straw-coloured rays. 

 The secretion from the nose is scant, and may be tinged with 

 blood ; the mouth is clammy, and tongue furred ; the internal 

 temperature high — 103° F. to 106° F. — while the surface-heat 

 is irregularly distributed, both as to localities and to time. 



The animal seems stupid or torpid from the imperfect 

 aeration of the blood, and shows great disinclination to move ; 

 and, when moved, the weakness and prostration are great — 

 much greater, indeed, than seems accountable for, considering 

 the period of continuance or the severity of the disease. 



Physical examination of the chest by auscultation reveals 

 roughness of the insj^iratory murmur heard over the lower 

 part of the great au--tube ; sibilant or wheezing sounds distri- 

 buted over more or less of the lung surface, indicative of 

 inflammation of the smaller bronchi ; and crepitation or 

 crepitant sounds — these last not invariably present, and when 

 heard not uniformly distributed. This crepitation, when the 

 bronchial sounds continue persistent, is disposed to pass into 

 the so-called subcrepitant and mucous rales rather than to bo 

 succeeded by signs of lung consolidation. 



b. Bi-oncliitis with Cardiac Disease. — When the bronchitis, 

 which may be regarded as the basis of the thoracic complica- 

 tions, is associated with cardiac or pericardiac disease, the 

 condition is ordinarily indicated by the peculiar character of 

 the pulsations and heart's action. This disturbance at both the 

 centre and periphery of the circulatory system is appreciated 

 in the condition of the pulse usually termed irregular. In 

 this there are a certain number — the majority of the beats of 

 a recognised normal character. These are followed by a few, 

 generally limited in number, Avliich show a marked departure 



