526 LECTURE XX. 



colloid class, which have altogether the structure of the 

 umbilical cord, and which, like this part, essentially con- 

 tain mucus in their intercellular substance. Now since I 

 had named the tissue of the umbilical cord and analogous 

 parts, mucous tissue, it is a very simple step for me to 

 call these tumours Mucous tumours (Schleimgeschwulste), 

 Myxomata. When we demonstrate the occurrence of 

 tumours exhibiting the histological type of the umbilical 

 cord in the midst of the adult body, the striking charac- 

 ter of the phenomenon is in no wise lessened, but we 

 have found for them a type among the normal tissues of 

 the body. Another form of colloid, or as Johannes Miil- 

 ler has called it, Collonema, turns out to be merely oede- 

 matous connective tissue. We find nothing more than a 

 very soft tissue, soaked in an albuminous fluid. Such a 

 tumour cannot be separated from connective -tissue 

 [fibrous] tumours generally, whether they be denomi- 

 nated gelatinous, oedematous, or sclerematous* connec- 

 tive-tissue tumours, and I think there is no occasion to 

 estrange it from the mind by bestowing upon it the name 

 of collonema. So, again, we find certain forms of can- 

 cer, in which the stroma, instead of being composed 

 simply of connective tissue, consists of the same mucous 

 tissue which we meet with in a simple mucous tumour. 

 These we may simply name Mucous Cancer (Gelatinous 

 or Colloid Cancer). We then know exactly what we 

 have before us. We know it is a cancer, but that its 

 stroma differs in its containing mucus and in its gelati- 

 nous nature from the ordinary stroma of cancers. k 



To revert once more to the consideration of tubercle- 

 it would certainly be something completely abnormal if 

 it were composed of corpuscles tuber culeux ; but if you 

 compare the cells which are, as at least I must assume to 



* Sclerema=oedema durum. 



