510 LECTURE XX. 



by means of these new names to render things which 

 have long been known strange to the minds of people in 

 general. Even new-formations which very evidently fol- 

 low the type of some definite normal tissue, still for the 

 most part possess peculiarities, whereby they may be 

 more or less distinguished from this tissue, so that in the 

 majority of cases, at least, it is by no means necessary to 

 see the whole of the new-formation in order to know 

 that this is not the normal, regular development of the 

 tissue, but that on the contrary there is something in it, 

 although it does not lose the type, which deviates from 

 the ordinary course of homologous development. Be- 

 sides there still remain even at the present time a certain 

 number of new-formations, the external appearance or 

 clinical character of which has, in part from the want of 

 known physiological types, been retained as the basis for 

 their names. 



We still continue to speak of tubercle, and the name 

 which Fuchs has invented as a substitute, the only new 

 one, as far as I know, which it has been attempted to 

 introduce in its stead, Phyma, is so very indefinite, so 

 readily applicable to every "growth," that it has met 

 with no great favour. Several other names have been 

 recently used to a continually increasing extent, which 

 are also nothing more than stop-gags, as for example that 

 of Colloid. This name was invented at the commence- 

 ment of the present century by Laennec to designate a 

 form of tumour which he described as analogous in con- 

 sistence to half-set glue ; in its well- developed form it 

 constitutes a half-trembling gelly, colourless or of slightly 

 yellowish hue, which on the whole conveys the impres- 

 sion of a nearly complete absence of all structure. Whilst 

 people formerly declared themselves perfectly content, 

 when tumours of this kind were designated jelly-like, or 

 gelatinous, to many of the more recent observers it haa 



