

Class IV. 2. 1. 16. OF ASSOCIATION. 4o£ 



wide, and 12 high ;" all which he guefled by the ear with great 

 accuracy. Now if thefe irritative founds from the partial lofs 

 of hearing do not correfpond with the fize or ufual echoes of 

 the places, where we are ; their catenation with other irritative 

 ideas, as thofe of viiion, becomes diiTevered or difturbed ; and we 

 attend to them in confequence, which I think unravels this in- 

 tricate circumftance of noifes being always heard in the head, 

 when the fenfe of hearing begins to be impaired, from whatever 

 caufe it occurs. 



This ringing in the ears alfo attends the vertigo from intoxi- 

 cation ; for the irritative ideas of found are then more weakly 

 excited in confequence of the deficiency of the fenforial power 

 of aflbciation. As is known by this alfo being attended with 

 difagreeable fenfation, and by its accompanying other difeaies of 

 debility, as ftrokes on the head, fainting fits, and paralytic feiz- 

 ures. For in this vertigo from intoxication fo much fenforial 

 power in general is expended on the increafed actions of the 

 ftomach,and its neareft connections, as the capillaries of the (kin ; 

 that there is a deficiency for the purpofes of the other irritative 

 aflociations of motions ufually connected with it. This auditory 

 vertigo attends both the rotatory and the vifual vertigo above- 

 mentioned j in the former it is introduced by reverfe fympathy, 

 that is, by the diminution of fenforial power ; too great a 

 quantity of it being expended on the increafed irritative motions 

 of vifion ; in the latter it is produced either by the fame caufes 

 which produce the vifual vertigo, or by direcf; fympathy with it. 

 See Seel:. XX. 7. 



M. M. Stimulate the internal ear by ether, or with efTential 

 oil diluted with exprefled oil, or with a folution of opium in wine, 

 or in water. Or with fait and water. Apply a cupping glafs 

 over the ear. See I. 2. 5. 6. Galvanic ihocks through the tem- 

 ples. See IV. 2. 1. 11. 



16. Taffus, guftus, olfaBus vertiginoji. Vertiginous touch, 

 tafte, and fmell. In the vertigo of intoxication, when the patient 

 lies down in bed, it fometimes happens even in the dark, that 

 the bed feems to librate under him, and he is afraid of falling 

 out of it. The fame occurs to people, who are fea-fick, even 

 when they lie down in the dark. In thefe the irritative motions 

 of the nerves of touch, or irritative tangible ideas, are performed 

 with lefs energy, in one cafe by reverfe fympathy with the ftom- 

 ach, in the other bv reverfe fympathy with the nerves of vifion, 

 and in confequence become attended with fenfation, and pro- 

 duce the fear of falling by other afibciations. 



A vertigo of the fenlQ of touch may be produced, if any one 

 turns round for a time with his eyes fhut, and fuddenly Hops 



Vol. II. E e e without 



