FUNGI INHABITING THE ANIMAL BODY. 



357 



with individuals whose stomachs do not contain it. The 

 Enterobryus originally consists of a single long tubular cell, which 

 sometimes grows in a spiral mode (Fig. 1(38), sometimes straight 

 and tapering (Fig. 169, a). In its young state the cell con- 

 tains a transparent protoplasm, with granules and globules of 

 various sizes ; but in its more advanced condition the tube of the 

 filament is occupied by cells in various stages of development ; 

 these distend the terminal part of the cell (Fig. 169, b), and press 

 so much against each other that their walls become flattened ; 

 whilst nearer the middle of the same filament (c) we find them 

 retaining their rounded form, and merely lying in contact with 

 each other ; and at the base (d), they lie detached in the midst 

 of the granular protoplasma. In E. spiralis the primary cells 

 (Fig. 168, b, c) very commonly have secondary and even ternary 

 cells (d) developed at their extremities ; but this is rarely seen in 

 E. attenuates (Fig. 169). It may be considered as next to certain 

 that -the tubular filaments rupture, when the contained cells have 

 arrived at maturity, and give them exit ; and that these cells are 

 developed, under favourable circumstances, into tubular filaments 

 like those from which they sprang ; but the process has not yet 

 been thoroughly made-out. This is obviously not the true Genera- 

 tion of the plant, but is analogous to the development of Zoospores 



Fig. 169 1 . 



Structure of Enterobryus:— a, growth of E. attenuatus, from 

 mucous membrane of stomach, of Passulus ; b, dilated extremity 

 of primary cell of E. elegans, filled with, secondary cells, which, 

 near its termination, become mutually flattened by pressure ; 

 c, lower' portion of the same filament, containing cells mingled 

 with granules ; d, base of the same filament, containing globules 

 interspersed among granules. 



