312 Mr M e Dowall, A Preliminary Note, etc. 



In properly-preserved examples I find nothing resembling 

 these structures, which however are the more curious, as they 

 appear throughout one whole series of sections. 



Although all the phases described, with the exception of the 

 last stage of the synopsis, are complex and difficult to observe, yet 

 in favourable instances they are sufficiently clear to make their 

 interpretation certain, and the occurrence of these peculiar 

 appearances in badly-preserved material does not alter my views 

 as to the real meaning of the phenomena observed. 



