PLATE 3 
EXPLANATION OF FIGURES 
13. Nerve plexus, sketch from life of region posterior and lateral to eye. 
14. Ganglion-like part of plexus much enlarged. 
15. Plan of muscle fibers, sketched from section fixed in Flemming's fluid and 
stained with iron hematoxylin. 
16. Collapsed embryonic capsule, life; length 0.07 millimeter. 
17. Two of the same, from specimen mounted in balsam, length; 0.07 millimeter. 
18. Another of the same from specimen mounted in balsam, length 0.05 milli- 
meter. 
19. Ovum from specimen mounted in balsam, longest diameter 0.09 millimeter. 
20. Ovum with several cells in fine-granular yolk, same magnification as fig. 19. 
21. Ovum with cluster of cells in midst of granular yolk. 
22. Ovum with two clusters of cells at opposite poles separated by yolk. 
23. Two ova, each with two embryos already- formed in the midst of the yolk. 
24. Three ova in place, representing different stages of development, from life. 
25. Ovum containing only large nucleated cells, all the yolk has been absorbed; 
not a usual condition. 
26. Twins in embryonic capsule, diameter about 0.04 millimeter. 
27. The same, a little older than those shown in fig. 26. 
28. Triplets in embryonic capsule. 
29. Twins in capsule, eyes developed. 
30. Another pair more highly magnified. 
31. Sperm-sac, collapsed, free in mesenchyme, probably distorted by pressure. 
