PLATE XII. 
Fig. 1. Section of Globigerina Ooze from Station 338 ; 1990 fathoms, South Atlantic (magnified 50 diameters). 
The mud, just as it was obtained from the dredge, was hardened and then cut into thin sections, 
so as to be seen by transmitted light. It is almost entirely composed of shells of pelagic Fora- 
minifera, among which species of Glohigenna and Pulvinulina are the most abimdant. 
1. Longitudinal section of Globigerina rubra. 
2. ,, ,, Nonionina umbilkalula, 
3. Fragment of shell of Grbulina universa. 
4. Part section of Sphseroidina dehiscens, 
5. Part of shell of Orbulina universa, showing 
foramina. 
6. Longitudinal section of Pulvinulina crassa. 
7. Globigerina bulloides. 
)) )> 
9. Median section of Orbulina universa. 
i> y> 9) It 
11. Part „ „ „ 
12. Small Globigerina shells. 
13. Section of Pulvinulina menardii. 
Fig. 2. Section of rock dredged at Station 192; 129 fathoms, off Ki Islands (magnified 50 diameters). 
This rock is composed principally of pelagic Foraminifera, similar to those now living in the 
tropical waters of the Pacific and Atlantic Oceans. It was probably not formed of the mud from 
M’hich it was dredged, but belongs to an older formation (see page 171). 
1. Section of portion of test of Echinoderm. 
2. Part section of Pullenia obliguiloculata. 
3. Section of Globigerina bulloides. 
>f II II 
6. Longitudinal section of Uvigerina sp. (?). 
6. ,, ,, Pulvinulinarnicheliniana, 
7. ,, ,, Pullenia obliguiloculata, 
8. ,, ,, Pulvinulina menardii, 
9. Section of Globigerina rubra. 
10. Section across one lobe of Globigerina rubra. 
11. Fragment of test of Echinoderm. 
12. Transverse section of spine of Echinoderm. 
13. Longitudinal section of Globigerina rubra. 
14. Part section of Nodosaria communis. 
15. ,, Orbulina universa. 
16. BuUmina sp. (?). 
17. Transverse section of Pulvinulina michcl- 
iniana. 
Fig. 3. Section of Globigerina Ooze from Station 348 ; 2450 fathoms. Tropical North Atlantic (magnified 
50 diameters). The ooze consists principally of the large shells of pelagic Pulvinulina, Sphseroidina, 
and Globigerina. 
1. Pulvinulina menardii. 
2. Part section of Sphseroidina dehiscens. 
3. Transverse section of Truncatulina sp. (?). 
4. Part of final lobe of Pulvinulina menardii. 
5. Part section of Pullenia obliguiloculata, 
6. Radiolarian. 
7. Longitudinal section of Pulvinulina menardii. 
8. Globigerina sacculifera. 
9. Superior aspect of Globigerina injlata. 
10. Longitudinal median section of Pulvinulina 
menardii, 
11. Globigerina dubia. 
12. Part section of Orbulina universa. 
13. ,, Pulvinulina meivardii. 
14. Radiolarian. 
Fig. 4. Section of Globigerina Ooze from Station 158; 1800 fathoms. Southern Indian Ocean (magnified 50 
diameters). The ooze here consists principally of Globigerinse, the more tropical forms being 
absent. 
1. Part section of Globigerina bulloides. 
2. Radiolarian. 
8. Globigerina bulloides. 
II II 
b' II II 
6. Radiolarian (?). 
7. Globigerina rubra. 
8. Radiolarian. 
9. Longitudinal section of Pullenia obliguiloculata. 
10, ,, ,, Pulvinulina crassa. 
11, Section of Sphseroidina dehiscens, 
12, Radiolarian. 
