iv List of Plates. 



Plate XII. 



Changes of form and structure in human red blood-corpuscles. 

 Fig. 1. a. Indentations and furrows. 



/>. c, </. "Rosette," "scalloped," and ." stellate " forms, 

 e. Constrictions, etc. 



2. a, J>. Protrusion and occasional separation of "knobs." 



3. Occasional coalescence into groups or chains. 



4. Internal vacuoles. 



5. Granular and "network" structure (also shown 



in fig. 3 . 



6. Disappearance of the interior granular structure, 



and formation of ." ghosts." 



See pages 200 to 271 of text. 



Plate XIII. 



Fig. 1. Cross-section of a crystal of Spodumene, partially altered to 

 Cymatolite and Killinite. See page 329 of text. 



Fig. 2. Magnified section of the line of contact (a, a) between Cyma- 

 tolite (c) and Killinite (k, k), showing the blades of the former projecting 

 into the latter. See page 346 of text. 



Plate XIV 



Fig. A. Vitrinizonites latissimus, Lewis, animal. 



B. 

 C. 

 D. 

 E. 

 F. 



a. 



H. 



I. 

 J. 



K. 

 L. 



Zonites capnodes, Binn., 



" Rugeli, Binn., 

 Mesodon Andrewsi, Binn. , 



" dentifera, Binn., 

 Helix rariplicata, Benson, 

 Rhytida vernicosa, Kraus, 

 Buliminus Natalensis, Kr. . 

 Helix, globulus, Mull. , 

 Glandina, dentition. 



2,'enitalia. 



lingual membrane. 



genitalia. 



dentition. 



lingual membrane. 



See page l!62 of text. 



