PAEASITIC DISEASES OP THE SKIN. 



253 



eight inches wide running the whole length from back of pen to 

 Yat. The floor is made of matched flooring laid on rough two- 

 inch lumber. In center of pen, in a line with gutter, a division 

 'fence is run, which forms two pens ten feet by twenty feet, a 

 swing gate being placed at end next vat, which when closing one 



1. Draining' pens, 2. Steps leading from vat to draining pen. 3. Sliowing di- 

 visioa ot draining- pen. 4. Swing gate at entrance to pens. 5. Slats of bottom of pens, 

 leading from sides of pens to gutter in center. 6. Gates at exit of draining pens. 

 7. Runway back to ground. 



pen leaves the other open, so that when one pen becomes filled 

 with sheep the gate is brought over, leaving the other opening- 

 free. When this pen is filled, the sheep in first pen will have 

 been drained sufiiciently, and the gate at rear of pen can be 

 opened to give them exit. By this means a continual stream of 

 sheep is kept passing through the pens. 



