412 
W. X. F. WOODLAXD. 
on tlie other hand, appearing as a fine sediment or homo- 
geneous film), and (b) that tliey are lined, not by squamous 
epithelium, but by the excretory cells, the border of which, 
situated next the lumen, is characteristically striped. The 
Text-fig. 
Cells of middle portion of kidney showing least amount of 
granulation, also striated border (Str. B.) and striations in 
cytoplasm {C. Str.). Blood-sinus {B.S.) relatively spacious. 
( X 810.) 
Text-fig. 7. 
Cells of kidney nearest duct showing greater granulation (Gni.). 
( X 8li).) For other reference letters see p. 429. 
cells composing the kidney vary slightly in character accord- 
ing to their position, those situated towards the end-sac, i. e. 
in the dorsal region, being far less granular and somewhat 
more columnar in form than the cells situated nearer the 
gland-duct. The more dorsal ly situated cells (Text-fig. 6) 
