200 VEGETABLE PARASITES. 



the epithelium undergoes by a catarrh are unfortunately little 

 known as yet, and just as little do we know correctly the nature 

 of the secessions of secretion. One would naturally expect that 

 the eruption of the thrush-fungus should always bo preceded by 

 distinct indications of catarrh, *as was stated by Billard, Lelut, 

 Valleix, Empis, and Gubler, who supposed the mucous membrane 

 to be more or less inflamed, and yet these symptoms of inflam- 

 mation are so few and so indefinite, as was already stated by 

 Robin, that they can scarcely be recognised. There are, how- 

 ever, indications of such a state of irritation, although very local, 

 such as a local stomatitis, and the formation of a more abundant 

 epithelium on such places (Berg, Bednar, Reubold Stomatitis 

 morbillosa). We may, moreover, mention those symptoms which 

 point to a catarrhal state of remote portions of the bowels, or to 

 general diseases of the blood (typhus, phthisis, phhbitides, lymphan- 

 yitides, fyc.} such as, diarrhoea, vomiting with pain, fever, ery- 

 thema podicis, though Bednar thinks that this is merely a 

 complication with thrush. It must not be overlooked that the 

 thrush sometimes disappears rapidly, sometimes remains stationary 

 for a long time, and sometimes reappears ; and it is well to 

 observe in future, whether this change can be brought into 

 accordance with changes observed in the catarrh. Let us 

 not forget that the most favorable age is that of childhood. 

 This age offers most facility on account of its irritable mucous 

 membrane, so rich in blood, and which seems to react on the 

 slightest indigestion, by producing diarrhoea, inflammation of the 

 mucous membrane of the mouth, attended by dryness or pain, 

 when children are seen lying with open mouth, their tongue 

 scarcely moving; or by causing a general catarrh (icterus). 

 Keubold noticed on himself the thrush-fungus, caused by a 

 rheumatic inflammation of the neck, to which were added a 

 catarrhal and a local irritation of the mucous membrane of the 

 mouth, from taking rancid cod-liver oil, and saw it disappear 

 again with the catarrh. 



The occurrence of thrush around the nipples of mothers is 

 explained by Robin, with Bouchut, Rayer, and Empis, according 

 to his theory of acidification, as being caused by the retention 

 and acidification on these places of the milk and the mucus of 

 the child's mouth ; and Rayer, Charco, Depaul, and Verneil, say 

 they have noticed it on ulcers of the extremities, in consequence 

 of protracted lying, in the case of severe phlebitis, a fact which 



