HANDBOOK OF THE TURF. 287 



habit); bolting, (when caused by defective sight it is an unsound- 

 ness); biting; boring; buck-jumping; cribbing, crib-biting, (where 

 it lias not yet resulted in a fixtnl disease, or caused a change of 

 structure, in which case it is an tinsoundness); chucking up the 

 head; disagreeable to approach; disagreeable to groom; difficult 

 to harness; difficuilt to mount; difficult Yo shoe ; eating the bedding, 

 (leading to impaired health); gibbiiig; getting loose from the head- 

 stall; hanging back in the halter; halter-casting; hard moutli; 

 inveterate rolling; kicking; leaping iiito the manger; mischievous 

 or decidedly capricious temper; pawing in the stable; i)ropping; 

 rearing; restiveness, (uneasiness); running when in harness; shy- 

 ing from nervousness, (if from disease in the eyes it is an unsound- 

 ness); skittisliness; striking with the fore feet; stopping suddenly ; 

 starting or jumping when harnessed before the driver is ready; 

 weaving; wind-sucking. 



Vulcanized Rubber. The substance of which the 

 pneumatic tire of a bicycle sulky is made. The caoutchouc is 

 incorporated with sulphur and subjected to a strong heat 

 whereby it combines chemically with the sulphur and assumes, 

 on cooling, a hard consistency much resembling that of horn. 



