M DADDS VETERLXARY MEDICINE AND SURGERY. 



the duiraal so mutilated be pinched, he still persists in his retro- 

 grade course. Injuries of the medulla oblongata had the same 

 effect. Pigeons, into which he forced a pin through that ]>art 

 constantly receded for more than a month, and even flew l^aclr- 

 ward. A section of the medulla oblongata, where it approaches 

 the anterior ])yramid, gives rise to a movement in a -ircle lilvC 

 thii of a horse in a mill, the animal, in its walk .r its flighty 

 bearing round continually to the injured side. Surely we havf , 

 in these facts, supplied by experiments on living animals, and L^ 

 observation of the phenomena of disease in the living numan 

 body, some of the materials for a more exact knowledge, both of 

 the physiology and of the pathology of the nervous system, than 

 we have reached. M. INIagcndie supposes that different portions 

 of the cncephalon are endowed with energies which tend to cause 

 motion in various directions ; that in the healthy state these bal- 

 ance each other, and that a prejionderating impulse can be given 

 to any one of these forces by tVe will ; but that when the equilib- 

 rium is destroyed by disease, tne will is not sufficient to counter- 

 act the tendencies which are then brought into play. Mr INIayo 

 offers a different explanation of the ])henomena. He supposes 

 that the injuries inflicted on the nervous matter produce a sensa- 

 tion analogous to vertigo, and that the animal conceives itself 

 either to be hurried forward, and makes an exscrtion to repel im- 

 aginary force, or to be moving backward, or turning round in 

 one direction, and endeavors to correct this by moving the corre- 

 sponding muscles." 



Treat iiient. — In stringhalt, it is nearly always safe for us to 

 conclude that it must be treated on the same general principles 

 which obtain in the management of other nervous disorders of a 

 chronic character, viz.: in the use of tonics and anti-soasmodies 

 Take; for example : 



No. 10. Fluid extract of valerian ") . 



Fluid extract of poplar bark j " " 



DosC; one ounce, morning and evening; to be placed on the 

 tougue. The spine and affected limb or limbs should be rubbed 

 evary night, for a couple of weeks, with a portion of the following 



No. 11. Fluid extract of poppies , . fi o«. 



Proof spirit 1 : int. 



Mix. 



