350 The Farmer's Veterinary Adviser. 



principles as in inflammation of tlie spinal cord in othei 

 animals but will rarely pay. Prevention is to be sought 

 by keeping breeding ewes and young slieep from newly 

 limed land ; by using none for breeding under two years 

 old, and, by close attention to food, T^ater and shelter, to 

 secure good health during pregnancy. 



PABALYSIS. LOSS OF SENSATION OE VOLUNTARY MOTION. 



Loss of voluntary motion is known as Motor paralysis, 

 loss of sensation as Sensory paralysis or Anaesthesia. Pa- 

 ralysis is also periplieral when it occurs from injury to the 

 nerves (ehUling, tearing, cutting, pressure, inflammation, 

 degeneration, etc.,) and central when it arises from injury 

 to the great nerve centres, the brain and spinal cord. 

 Sensory and motor paralysis may exist independently of 

 each other, and loss of sensation on one side of the body 

 may coexist with increased sensitiveness on the other. 

 An injury to one side of the brain usually paralyzes sen- 

 sation or motion on the opposite side of the body. Injury 

 to the lower part of one lateral h'alf of the spinal cord, 

 paralyzes motion on the same side of the body behind the 

 lesion ; while an injury to the upper part of one lateral 

 half of the cord paralyzes sensation on the opposite side 

 behind the hurt, and in a small adjacent part of the same 

 side, while the rest of this side behind the lesion is ren- 

 dered more sensitive. Space forbids our following further 

 the indications furnished by the nature and seat of the 

 paralysis, as to the probable lesions in the central nervous 

 system ; this must be left for a larger work. 



geneeal paralysis. 



Paralysis of the face, trunk and extremities, but with- 

 out the implication of the muscles of respiration, may 

 arise from pressure on the brain, or as a reflex action from 

 distant organs (impacted stomach, constipation, preg- 

 nancy, etc.,) and may not be incompatible with life. P 

 from section or cutting of the spinal cord in front of tht. 



