SYNOPSIS OF CONTINENTAL VETERINARY JOURNALS. 155 
but could not there observe the slightest trace of peripneu¬ 
monia, all the cows being in a state of perfect health and 
remaining so. Before this, in 1865, in the Magazin fur 
Thierheilkunde , Schmidt had described a disease affecting 
two cows in a shed, without any of the other beasts standing 
with them becoming in the slightest degree indisposed, 
when, except in this important peculiarity, the description 
given was that of epizootic pleuro-pneumonia. Similar facts 
were published afterwards by Eberhard, Schmetz, Harting, 
Pauli, &c. Thus Spinola’s opinion that marble-like hepati- 
sation of the lung is not a pathognomonic sign of epizootic 
pneumonia is confirmed. The differential diagnosis of these 
two disorders is surrounded with difficulties; very frequently 
they are confounded in spite of every care. Generally, 
however, in simple pneumonia only a single case occurs in 
an establishment, and the disease is not transmitted to the 
other head of cattle. The affection is an acute, pure, re¬ 
gular inflammation of the lungs, and at the end of some 
days the percussion and auscultation determine the presence 
of hepatisation. At autopsy, instead of thrombosis of the 
pulmonary arteries, such as we see in epizootic pleuro-pneu- 
monia, and instead of copious infiltration of a yellow colour 
and gelatinous appearance of the interlobular areolar tissue, 
and often puckering of that tissue, and the marked 
variation in colour of the different consolidated portions, 
some days after the commencement we find in simple pneu¬ 
monia hepatisation everywhere in the same stage, extending 
continuously through the lung tissue without the sharp 
demarcation between healthy parenchyma and that which 
has undergone morbid changes. Also, it is important to 
note the presence of cellular infiltration of the pulmonary 
air cells. Degeneration of pulmonary parenchyma and exu¬ 
dations never in this case attain the considerable bulk which 
they do in pleuro-pneumonia zymotica. 
Gerlach considers the marbled hepatisation character¬ 
istic of epizootic pleuro-pneumonia, when it is accompanied 
by an exudate coagulated in the interlobular areolar tissue 
around the differently coloured pulmonary lobules, whether 
these contain air or not. The affected portion of lung is 
increased in volume and weight, and has lost its elasticity. 
Besides epizootic pleuro-pneumonia, Gerlach allows the 
occurrence in bovines of a metastatic pneumonia, a pneu¬ 
monia due to foreign bodies, a traumatic pneumonia, and a 
tuberculous pneumonia. In none of them is marbled hepa¬ 
tisation to be met with. The following case, related by M. 
Saur in the Repertorium der Thierheilkunde (1878, 4me 
