ISOLATION OF TUBERCULOUS CATTLE BY SEPARATION. 401 
the expense would be too great, my advice was to separate 
the diseased from the well. 
Now, gentlemen, I find an excellent experiment by separa¬ 
tion conducted by Prof. W. Goodman, in Dorpat, reported 
in the monthly journal (.Praktische Thierheilkunde , VI Band, 
io Heft). As the report appeared to me so valuable at the 
present time, in our efforts to stamp out tuberculosis, I will 
give a synopsis of this report. 
I am thoroughly convinced that tuberculine is the only 
reliable diagnostic remedy for the separation of diseased from 
healthy cattle, conditioned only on the application of the 
proper dose and on the right measurement of temperature 
carefully taken before and after the injection has been given. 
As early as 1891, I was permitted to use tuberculine as a 
diagnostic remedy in the battle against cattle tuberculosis on 
one of the largest herds in the government of Livland, 
thanks to the extreme kindness of the owner, Hon. August 
Von Sivers, of Manor Old Kusthof, near Dorpat. Of the re¬ 
sults achieved at the first, as well as at later examinations, 
the following we will report: 
The estate Old Kusthof consists of one principal farm, be¬ 
sides three others, separated only a few kilometers from each 
other. On each of these farms is situated a large, well ar¬ 
ranged cattle barn, therefore Old Kusthof is admirably suited 
for the separation of animals, necessary after tuberculine in¬ 
jection. 
The Old Kusthof herd is of high grade stock which Hon. 
Von Sivers has raised after thirteen years crossing of im¬ 
ported Jutland stock with the Livland home stock, and was 
considered in the best condition. In that whole region this 
herd was looked upon as being the healthiest, as it has been 
: the rigid practice for years to separate any and all animals 
that showed any symptoms of tuberculosis. 
In March and April, 1891, the first tuberbuline injections 
were made on 486 cattle, at which time we gave for steers 
0.5, old cows 0.3, younger cows 0.2 and heifers o. 1, of tuber¬ 
culine. The result was as follows : 
