PLATE III. 
The Diagrams illustrate Mr. Huxley's paper of Adult Kotifera, and of 
Larval Annelids and Ecliinoderms. 
Fig. 
1. Raphides from Cactus enneagonus, showing a nucleus surrounded by 
concentric laminse. 
2. The same, with irregular laminse. 
3 & 4. The same, without concentric lamination, 
5. Nuclei of raphides. 
6. Separated crystals of compound raphides. 
