w- 
The Superior Government has enacted laws and 
established measures to combat the tick (B. Microplus). 
The country has been divided for this purpose into 
three zones, taking advantage of natural conditions, 
it being almost entirely traversed from west to east 
by a river (Rio Negro), the zone lying to the north 
of this river is considered completely infested by the 
tick and the zone to the south is divided into an 
intermediate zone partially infested and a zone con- 
*■ 
sidered free fo tick fever (Jiroplasmosis Bovina). 
By means of these measures it is desired to pre¬ 
vent invasion into the now clean district and to 
exterminate the disease where it already exists to as 
great extent as possible through dipping; however, 
there exist a large number of circumstances which will 
retard success even in a small measure, among them 
figure the dips of relatively little effectiveness 
and for this reason it has been necessary to 
acclimate the imported stock and vaccinate it to 
be able to continue cross breeding in the infested 
¥ 
districts. The j&stacion iixpcrimontal in Durazno 
lias attempted to solve the problem along this line 
and whishes to continue to expend its energies to 
such an extent that its exforts will be crowned 
with success* 
