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its disappearance from the zone where it only exists 

 because of the introduction of animals attacked by 

 "garrapata", arrived from the north, be the te- 

 rritory divided in three zones: e.e. infected zone, 

 intermediate zone and undamaged zone. 



Divisions of zones 



Art. 50 — The lines which divide these will be sti- 

 pulated by the Sanitary Division keeping in mind 

 for the purpose that the quality of the undamaged 

 zone corresponds td the region free from the "ga- 

 rrapata", the intermediate to that partially inva- 

 ded by this parasite and the infected to that tota- 

 lly invaded or mostly so. 



The instructions which the Sanitary Division 

 will publish and have profusely made known will 

 clearly establish the lines which divide the zones 

 and the places where the transit of stock may be 

 officially effected between one line and another. 

 The same applies when because of change in the 

 state of the infection of some of the regions, the di- 

 visory lines be modified. 



Transit between zones 



Art. 51 — The Sanitary Division will previously 

 impose a "garrapaticida" bath of recognized effi- 

 ciency on the divisory lines of these zones for all 

 troops which transit the infected zone to the inter- 



