i 9 o OF VERTIGO. SECT. XX. 12, 



hence it appears, that the means of cure muft be adapted to 

 the caufe. 



To prevent fea-ficknefs it is probable, that the habit of fwing- 

 ing for a week or two before going on (hip board might be of 

 fervice. For the vertigo from failure of fight, fpedacles may be 

 ufed. For the auditory vertigo, aether may be dropt into the ear 

 to ftimulate the part, or to diflblve ear-wax, if fuch be a part of 

 the caufe. For the vertigo arifing from indigeftion, the peruvi- 

 an bark and a blifter are recommended. And for that owing 

 to a ftone in the ureter, venfe&ion, cathartics, opiates, fal foda 

 aerated. 



12. Definition of vertigo, i. Some of the irritative fenfual, 

 or mufcular motions, which were ufually not fucceeded by fen- 

 fation, are in this difeafe fucceeded by fenfation ; and the trains 

 or circles of motions, which were ufually catenated with them, 

 are interrupted, or inverted, or proceed in confufion. 2. The 

 fenfiriveand voluntary motions continue undifturbed. 3. The 

 affociate trains or circles of motions continue ; but their catena- 

 tions with fome of the irritative motions are disordered, or in 

 verted, or diflevered. 



SECT, 



