PARASITICAL GROWTHS ON LIVING ANIMALS. 147 



parroquet, which died of a tubercular disease, in a sort of false mem- 

 brane between the intestines and vertebral column, which membrane 

 was covered with a greenish pulverulent mouldiness, so light, and so 

 little adherent, that it could be blown off as a fine powder. They fur- 

 ther state, that a similar affection has been noticed by them in animals 

 of other classes, as in Cervus Axis, and Testudo Indica. 



5. In 1839, M. Schoenlein* announced the fact of the existence of 

 Mycodermata in the crusts of Tinea favosa. Priority, however, in this 

 observation, is claimed by M. Remak,f who says that he made it as far 

 back as 1836, when he stated that Tinea favosa consisted of fungoid 

 filaments. J 



On the announcement of Schcenlein's experiments in 1 839, they were 

 repeated by MM. Fuchs and Langenbeck, at Gottingen, who sup- 

 posed that they proved the existence of mucores, not only in the 

 crusts of true Tinea (Porrigo favosa and P. lupinosaj, but also in the ma- 

 jority of eruptions belonging to what they term cutaneous scrofula, for 

 instance, in the crusts of Impetigo scrofulosa, and in those of serpiginous 

 ulcers. These researches are published by M. Fuchs, in his Compte 

 Rendu the Polyclinique of Gottingen, in the Ann. Hanov. de M. 

 Holscher, Cahier de 1840, and still later in the first volume of his 

 Trait e des maladies de la peau, Gottingen, 1840. 



Latterly, however, a much fuller and more correct description of this 

 disease has been given by M. Gruby, of Vienna, who states that the 

 crusts of Tinea favosa contain, or in fact are made up of aggregated 

 Mycodermata. This growth consists of numerous corpuscles, rounded 

 or oblong, the longitudinal diameter of which is from about the -j^o-th 

 to the y^-oth of a millim, and the transverse from the -^-oth to the 

 TXoth. They are transparent, with a defined border, and smooth sur- 

 face ; colourless, or slightly yellow, and homogeneous. The corpuscles 

 are either separate, or, by their apposition end to end, constitute beaded 

 or articulated filaments, which are simply cylindrical or branched, ac- 

 cording to the part of the crust in which they are found. Besides these 

 beaded filaments, other much smaller branched filaments are to be 

 observed, which are furnished at certain distances with partitions (cloi - 

 sons vegetales), and thus represent oblong cells, in which are found 

 very minute round, transparent molecules, as exhibited by the figures in 

 the accompanying plate. Occasionally, some granules are found ad- 



* Miiller's Archives. f Medicinisch. Zeitung, No. XVI, Page 73, 74. 



J Valentin's Repertorium, 1841. Comptes Rendus, 1841. 



