PATHOLOGY OF PULMONARY DISEASES OF THE HORSE. 
17 
inasmuch as by so doing the wealth of the community is increased. 
Give your support to the establishment of institutions devoted to 
experimental medicine here in this country , in this city, and you 
will be benefitted therefrom, not only directly in your special 
profession, but in the better sanitary and pecuniary state of the 
entire land. 
A CONTRIBUTION TO THE PATHOLOGY OF THE 
PULMONARY DISEASES OF THE HORSE. 
By PROF. DR. SCHUTZ, 
PATHOLOGIST AND PATHOLOGICAL ANATOMIST OF THE ROYAL VETERINARY 
INSTITUTE, BERLIN. 
Translated from the German by F. S. BILLINGS, of Boston. 
(Original in the Ar elm fur Thierheilkunde , Band II, 8. 80. 
-: 0 :-— 
As known, the lungs of the foetus are now filled with air, the 
air first gaining access to the lungs of the young animal after 
birth. When authors speak of that condition of the lungs by 
which they contain no air as atelectasis, they are not exactly cor¬ 
rect. By lungs we understand the functioning, that is, respiring 
part of the respiratory apparatus in which takes place the gas 
exchange between the atmospheric air and the blood. The 
alveolae of the lungs gre filled with air, after birth, as well by the 
inspiration as by the expiration, and only under pathological con¬ 
ditions is the place taken by the air assumed by other masses, as 
blood, cells, water, fibrin, etc. When the alveolae of the lungs 
are filled with blood, we speak of a haemorrhagic infarctus , when 
they are filled with cells or fibrin, (and the lungs have the consis¬ 
tency (to palpitation) of the liver) of an hepatisation , when the 
alveolae are filled with water of pulmonary aedema, hydrops pul- 
monum. 
It is self-evident, that the filling of the alveolae of the lungs 
with blood, cells, fibrin, water, etc., causes a non-atmospheric con¬ 
dition of the same, but that is no atelectasis. Atelectasis is that 
