PLASSOMYXINEAE 1 1 1 



you may have a very considerable number of ultimate 

 particles of matter in a body of such dimensions. So that 

 there is no inherent difficulty in conceiving that micro- 

 organisms may possess such small dimensions as those I 

 have just given. (A micron = 25 o o inch.) " 



Anyone who has watched the streaming subdivisions of 

 Plassomyxa contagiosa is forced to conclude that such 

 plastic living matter may pass through a filter in masses 

 easily visible, equivalent to many microhenads joined 

 together. 



The filtration of molluscum virus has as yet been effected 

 only after comminution, and thus another possibility arises, 

 namely, that the virus may be in fractions of units, which 

 recombine in the filtrate. 



Notes on the Histology of the Molluscum Tumour. This 

 aspect of molluscum has been dealt with in Part IV, where 

 it is shown that the accepted notion that the molluscum 

 body is a degenerated cell is based on superficial and 

 misleading histology : only a few details need mention 

 here. 



Part of a section of a lesion of pin's-head size is shown in 

 Fig. 30. Parasites at b and c have escaped from the host- 

 nucleus and expanded in stellate form, staining less deeply 

 than still younger forms. The larger parasite near the 

 middle of a shows chromatic points throughout, these 

 suggest that a readjustment of chromatin occurs at this 

 stage. The granular chromatic matter in the oldest bodies 



