ADDITION TO THE REVISED EDITION OF 1880. 563 



as one who has once become dizzy on such an occasion, is almost cer- 

 tain to become so again in a similar position ; so, a person, who has 

 once become dizzy in his chamber, or while walking over an open 

 square, is in the greatest danger of becoming so again on a similar oc- 

 casion. The fear of the dizziness is a strong predisposing cause for it 

 ji this form, just as it is in that where people have it from standing 

 on a high place. On the other hand, concentrated attention on any 

 point, mental emotion, or even a slight noise, may, to a certain extent, 

 prevent attacks from either cause. As a proof of the correctness of 

 this view, I may mention the case of a clergyman, who, while going to 

 the pulpit in his church, had a severe attack of dizziness, and fell to 

 the floor. For years, as long as I had a chance to observe him, this 

 patient never had another attack of severe dizziness ; but he never en- 

 tered his pulpit after the first attack. On two or three attempts, he 

 thought he noticed premonitions of the dizziness, which induced him 

 to give up further attempts ; he had to give up his employment, just 

 as a tower-keeper or a roofer would have to abandon his, if, while 

 engaged in his avocation, he had one or two severe attacks of dizzi- 



[Cases answering the above description of stomach vertigo some- 

 times depend on errors of refraction in the eye, or on preponderance 

 of certain ocular muscles which may be corrected by proper specta- 

 cles. The chief varieties of vertigo are : 1, stomachic ; 2, sexual 

 (from nervous exhaustion) ; 3, ocular ; 4, epileptic ; 5, aural.] 



ADDITION TO THE REVISED EDITION OF 1880. 



SECTION IV. DISEASES OF THE STOMACH. 



1. P. 511. 



Where we wish to induce vomiting, the muriate of apomorphia, 

 subcutaneously injected over the stomach, has the advantage of 

 rapid action, and avoidance of the undesirable action on the bowels ; 

 but its general use is interfered with by the inequality of the prep- 

 arations, uncertainty of dose, and the fear of dangerous collapse, 

 especially in children. In some cases irritating the pharynx with 

 the finger, or drinking tepid water, suffices to cause evacuation of 

 the stomach. 



Where the fermentation of the contents of the stomach is ac- 

 companied by diarrhoea, we may give opium ; even to small chil- 



