CILIATE FIBRILLAR SYSTEMS 



197 



The several components of these fibrillar complexes, which were listed 

 above, constitute the main structural features shared by Klein and von 

 Gelei in their various accounts of the fibrillar system of Paramecium. 

 But certain discrepancies appear in their descriptions of these and espe- 

 cially of some other components. 



Space does not permit a discussion of all of these discrepancies, but 

 most of them will be found listed in Table 1, which comparatively sum- 

 marizes all the structural components ascribed to Parameciu7n's fibrillar 

 system by von Gelei and by Klein in their various publications. Some of 



tri. 



Figure 72. Diagram of G'ttter (lattice) with attached trichocysts and of the neuro- 

 nemes connecting bases of the cilia. (Von Gelei, 1925.) 

 Git. — Gitter neu. — neuroneme tri. — trichocyst 



the discrepancies may very possibly be attributable to species differences, 

 since von Gelei studied P. nephyidiatum and P. caudatum, while Klein's 

 descriptions are of P. aurelia. 



A few discrepancies should, however, here be pointed out. The first 

 and most important of these has to do with any structural integration 

 between the two fibrillar complexes. Klein especially emphasizes the fact 

 that his outer fibrillar complex and inner fibrillar complex are a con- 

 tinuum through interfibrillar connectives. Von Gelei, on the contrary, 

 denies that any connection exists and so states that his outer and inner 

 fibrillar complexes are only contiguous (Fig. 72) . 



A further discrepancy concerns the basal apparatus of the cilium. 

 According to von Gelei (1932a), this apparatus consists of (1) a basal 



