SPECIFIC TRAUMATIC INFECTIOUS DISEASES 37 



what retracted ; the whole body appears extended and the- 

 points of both, hocks are turned out ; the walk is stiff, the 

 animal mainly supporting weight with the toe region of the 

 hoof. By raising the head the eye is retracted and the- 

 membrana nictitans falls forward over the eye. The mouth 

 cannot be opened (trismus). Respiration is labored and from 

 20 to 50 or more per minute ; the pulse in unfavorable cases 

 runs from 50 to 70. Temperature, as a rule, is but little 

 elevated. The animal is easily excited. 



What is orthotonos ? 



That type of tetanus where the vertebral column forms a 

 straight horizontal line. 



What is opisthotonos ? 



That form of tetanus where the head is elevated and the 

 region of the back curved downwards. 



What is pleurosthotonos ? 



That form of tetanus where the vertebral column is 

 curved to one side. 



What type of tetanus is practically the only one seen in the 

 horse ? 

 Orthotonos. 



What is the termination of tetanus f 



In the most acute form, death in one to three days ; in 

 the acute form, death in four to ten days ; in the subacute 

 and chronic form, death after several weeks or recovery in 

 20 per cent, of all cases. 

 What does the prophylaxy of tetanus include ? 



Antiseptic treatment of all wounds and the injection of 

 antitetanic serum, previous to or immediately following the 

 injury. 



