236 
DR. carpenter’s RESEARCHES ON THE FORAMINIFERA. 
passages, directed alternately to one side and to the other, which lead to 
the cavities of the columnar cells : — 35 diam. 
Fig. 3. Horizontal section of the intermediate layer, immediately beneath the floors 
of the superficial cells, laying open the annular canals, with the summits of 
the columnar cells : — ^100 diam. 
Figs. 4 — 9. Various examples of the Reparation of disks after fracture, and of the 
growth of new disks from detached fragments. For description, see 
1137 — 40 of Memoir. Fig. 6 is magnified 6 diam. ; the rest 35 diam. 
Fig. 10. Monstrosity formed by the inclusion of a young disk within the outer zones 
of an older one, that seems to have been brought into contact with it by 
the progressive increase of its own diameter : — 25 diam. 
PLATE IX. 
Figs. 1 — 4. Various departures from the typical mode of concentric development, 
presented in their early state, both by simple and complex disks ; some of 
them even passing towards a spiral mode of evolution. Figs. 1 and 3 are 
magnified 35 diam. ; Figs. 2 and 4 are enlarged 90 diam. 
The remaining figures show various forms of Monstrosity, produced by excess of 
growth from the nucleus. 
Fig. 5, 6. Two views of a disk from the Philippine shores, having a single plane on 
one side, and two planes, meeting at an acute angle, on the other : — 6 diam. 
Figs. 7, 8, 9. Small Australian disks, with vertical crests : — 35 diam. 
Fig. 10. Disk from the ^Egean Sea, with a tri-radiate crest: — 35 diam. 
