POISONOUS PLANTS 251 



are staring and sunken and the gait becomes wabbly 

 and uncertain. In cattle a common symptom is the for- 

 mation of a serous sack under the jaws, often hanging 

 down like a great pouch. The eyesight appears to be 

 affected because the animal will "step high" over a 

 simple rut or wagon track in the road or a rope or even 

 a twig on the ground. Locoed horses often cannot be 

 led through a gate, but must be turned round and 



A Typical Locoed Animal, 



forced through backwards. Again they cannot be 

 backed excepting by the most violent efforts, but if once 

 they start back nothing but a mountain can stop them. 

 I once saw a locoed mule driven by an Irishman who 

 had never heard of loco. The animal was attached to 

 a dump cart and was being backed up to a cliff over 

 which the refuse of a military post was being dumped. 

 On the edge of the cliff a log twelve inches thick was 

 fastened as a bumper against which to back the wheels 



