PROTOPLASM 



PAGE 



^thalium septicum (Fuligo varians) . . • HI 



Pelomyxa palustris, Greeff . . ■ 116 



2. On Protoplasmic Structures in the Bacteria and allied 



Organisms ....-• 117 



3. Some Observations on the Streaming Protoplasm^of Vege- 



table Cells . . . . '. .122 



4. Observations on some Egg Cells . . . .124 



5. Red Blood Corpuscles of Rana esculenta . 127 



6. Observations on some Epithelial Cells . . . 131 



7. Peritoneal Cells on the Gut of Branchiobdella astaci, etc. . 136 



8. Liver Cells of Rana esculenta and Lepus cuniculus . 140 



9. Epithelium of the small Intestine of Lepus cuniculus . 142 



10. Pigment Cells of the Parenchyma of Aulastomum gulo . 143 



11. Capillaries from the Spinal Marrow of the Calf . . 143 



12. Connective Tissue Cells between the Nerve Fibres of the 



Ischiadic Nerve of Rana esculenta . . . 144 



13. Ganglion Cells and Nerve Fibres .... 145 



PART II 



General Pakt ..... 



A. The Theory of the Net-like or Reticular Structure of Proto 



plasm ..... 



B. Summary of Divergent Views . 



1. The Theory of the Fibrillar Structure of Protoplasm 



2. The so-called Spherular Theory of Kiinstler 



3. The so-called Granular Theory of Protoplasm 



4. Attempts to explain the Reticular Structures as PhenO' 



mena of Coagulation or Precipitation 

 The Nature of Colloid Bodies 



5. The Structure of Protoplasm is Alveolar or Honeycombed 



(Foam-like) . 

 (a) Aggregate Condition of Protoplasm 

 (6) Vacuoles .... 



(c) External Surface of the Protoplasm 



(d) Alveolar Layer 



(e) Cell Membranes, Cuticulse 

 (/) Radiate Layer of Alveoli round the Nucleus 



{g) Granular Enclosures in Protoplasm, and Corresponding 



Position of Soot Particles in the Artificial Foams 

 (A) Radiate Appearances in Protoplasm during Cell Division 

 (i) Radiate Appearances in Ova, etc. 

 0') Striated Protoplasm of Epithelial Cells . 



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