282 REMARKS ON EMPHYSEMA OF THE LUNGS. 
The subscribers to The Veterinarian will learn with regret 
that its respected Editor—Mr. Youatt—is at the time of writing 
this, and has been for these three weeks past, unable, from severe 
indisposition, to quit his bed: he is, however, we are in hopes, 
amending, and wdll, it is anxiously to be desired, be enabled, 
shortly, to resume his literary labours. In the mean while, Mr. 
W. Percivall has been placed in the editorial chair; not without 
full conviction, on his part, of the want of finish that must be ma¬ 
nifest throughout the present Number in his hands, and yet with a 
feeling that the subscribers will overlook imperfections, and other¬ 
wise grant him all the indulgence in their power. 
REMARKS ON EMPHYSEMA OF THE LUNGS. 
By George Budd, M.D. Physician to the Seamans Hospital, 
Dreadnought. 
[From the Lancet.] 
Emphysema of the lungs first distinctly pointed out by Dr. 
Baillie,—since more fully described by Laennec. One of the ob¬ 
jects of this paper is to shew that tvant of elasticity in the lungs— 
absence of its natural tendency to collapse—is the cause of many 
of the anatomical characters of emphysema, and of most of the 
symptoms by which the affection is characterized. These symp¬ 
toms and characters are, the cylindrical form of the chest, and eleva¬ 
tion of the shoulder blades and collar-bones, the abdominal cha¬ 
racter of the breathing ; the immobility of the parietes of the chest 
during respiration and cough; the peculiar character of the cough, 
which is short and interrupted ; the dryness and diminished vas¬ 
cularity of the capillary system of the pulmonary artery, in por¬ 
tions of lung affected Avith emphysema: imperfect arterialization 
of the blood, and consequently diminution of animal heat; ob¬ 
struction to the circulation through the lung, causing dilatation of 
the right cavities of the heart, and a tendency to general oedema. 
Dilatation of the air-cells was considered by Laennec as the 
chief character of emphysema of the lungs, and he supposed that 
this dilatation Avas caused by some obstruction in the air-passages, 
which prevented the free escape of air from the lungs. The cor¬ 
rectness of this became doubted Avhen Dr. .Jackson discovered that 
