ITS DIFFERENT PHASES OF DEVELOPMENT IN THE ANIMAL SERIES. 99 
Explanation of the Plate. 
PLATE II. 
ANNULOSA. 
Crustacea. — Crabs. 
First Phase. — Gr anule-cell. 
Fig. 1. Granule-cell as it appears when the blood is examined immediately on being- 
drawn. 
Figs. 2 and 3. Granule-cells changed in shape as they appear very soon after the 
blood has been drawn. 
Fig. 4. Granule-cell, with the cell-wall in view at the circumference, and shooting out 
bud-like processes here and there. 
Fig. 5 a. Granule-cell after being acted on by water. 
Fig. 5 h. Granule-cell after being acted on by acetic acid. The granules have all 
disappeared by solution, and a small cellseform nucleus has thus come into 
view. 
Second Phase. — Nucleated Cell. 
Fig. 6. Nucleated cell as it appears when the blood is examined immediately on 
being drawn. 
Figs. 7, 8, 9. The nucleated cell in different degrees of change of shape. 
Fig. 10. Nucleated cell after being acted on by water. 
Fig. 11. Another, after being treated in the same way, but still presenting some 
remains of the granules of the first phase, and a smaller cellseform nucleus 
than the preceding. 
Arachnida. — Spider. 
First Phase. 
Fig. 1. Granule-cell, coarsely granular stage. 
Fig. 2. Granule-cell, finely granular stage ; both as seen when the blood was ex- 
amined immediately on being drawn. 
Fig. 3. Granule-cell changed in shape, and with the cell-wall shot out into processes. 
Figs. 4 and 5. Granule-cells in coarsely and finely granular stages distended by 
water. 
Fig. 6. Granule-cell after the granules have been dissolved by acetic acid. 
Second Phase. 
Fig. 7. Nucleated cell as it appeared when the blood was examined immediately on 
being drawn. 
Fig. 8. The same, changed in shape, as it appeared soon after the blood was drawn. 
Fig. 9. The same, distended by water. 
