438 A. J. MURRAY, 



of an interlacing mass of fibrils which bifurcate or divide into three 

 or more branches during their course. The result at which I have 

 arrived after somewhat extended study is that we have here an al- 

 veolar structure of which the interspaces are in wide intercommuni- 

 cation. In this way the septa are reduced to the condition of com- 

 pressed fibrils which anastomose with each other freely. The evidence 

 for this view is contained in my figures especially such as show the 

 appearances presented by the peculiar cytoplasmic rodlets mentioned 

 in the text. 



Edinburgh, March 1898. 



