244 bulletin: museum of comparative zoology. 



by the Golgi method, and do not lend support either to the view of 

 periceUular networks of neurofibrillae, nor of intracelkilar neurofi- 

 brillar structures. 



In stating these conclusions I do not wish to be understood as holding 

 that sense cells are morphologically or physiologically independent of 

 axis cylinders. It is now recognized that even in those structures in 

 Avhich there seems to be the greatest distinctness of cell limits, the cells 

 are far less independent of each other than was believed in the earlier 

 days of the cell theory. So far as it is safe to judge from the conditions 

 found in the ear, however, I believe that we may say that the cell 

 theory is as applicable to nervous tissue as it is to other tissues of the 

 animal body, and that the neurones, which are to be thought of as the 

 peculiar and complex cells of which nervous tissue is composed, are as 

 independent of one another, and as independent of other kinds of cells, 

 as are the cells which compose many other animal tissues. 



