3I S DISCOVERY REPORTS 



foraminiferal fragments can be recognized. No appreciable differences can be detected in slides 

 made from various parts of the core. 



Station 93. 23. ix. 26. Lat. 33 08' S. Long. 17 50' E. 165 m. (Plate XVII, inset.) 

 Glauconitic mud. The sample is largely composed of indefinite flocculent material which encloses 

 particles of foraminiferal shells, coccoliths and fragments of sponge spicules. Held in this flocculent 

 mass are various Foraminifera (including Globigerina with a diameter up to 0-3 mm.) and mineral 

 grains. The latter are chiefly colourless angular quartz fragments reaching a diameter of 0-2 mm., 

 but occasional grains of greenish material appear to be glauconite. 



Station 94. 23. ix. 26. Lat. 33 18' S. Long, 17 40' E. 281m. (Plate XVII, inset.) 

 Glauconitic mud. This sample is mainly composed of rounded and subangular mineral grains 

 averaging about 0-05 mm. in diameter. The grains are chiefly quartz, but some coloured minerals are 

 present. Deep green glauconite occurs in rounded grains. The organic material consists mainly of 

 echinid spines and sponge spicules. The only Foraminifera appear to be a few small (dwarf or im- 

 mature) specimens of Globigerina. There is little flocculent material. 



Station 95. 23-24. ix. 26. Lat. 33°3i'S. Long. 17° 29' E. 440 m. (Plate XVII, inset.) 

 Glauconitic mud. The sample is much paler in colour than the two preceding (Sts. 93 and 94). 

 It consists mainly of foraminiferal tests (up to 0-2 mm. diameter), most of which are broken and 

 apparently abraded. Sponge spicules also occur. Mineral grains include subangular fragments of 

 quartz (o-i mm.) and deep green glauconite (0-5 mm.). There is some quantity of finely divided 

 flocculent material in which coccoliths are plentiful. 



This is hardly a typical glauconitic mud, as the foraminiferal tests occur in larger proportion than 

 usual, but they have the appearance of drifted material. 



Station 96. 24. ix. 26. Lat. 33 06' S. Long. 17 01' E. 620 m. (Plate XVII, inset.) 

 Glauconitic mud. In the official Station List this sample is described as muddy Globigerina ooze. 

 It is essentially a Globigerina ooze in which many of the tests are infilled with deep green glauconite. 

 Some grains are seen in situ, others are rounded and compound, clearly internal moulds of Globi- 

 gerina shells. The finer fraction includes coccoliths among comminuted shells. The deposit is here 

 classified on the occurrence of glauconite. 



Station 97. 24. ix. 26. Lat. 33°n'S. Long. 16 55' 30" E. 995 m. (Plate XVII, inset.) 

 Glauconitic mud. A pale deposit consisting largely of Globigerina and other Foraminifera; the 

 tests are often broken. The finely divided material contains numbers of tiny calcite rods which seem 

 to be derived by comminution from foraminiferal tests. Sponge spicules and coccoliths also occur. 

 The sample is described as Globigerina ooze in the Station List, but the quantity of mineral grains 

 is greater than one would expect in an ooze. Angular grains of quartz reach a diameter of o-i mm., 

 and some glauconite grains have a similar size. 



In common with samples from Sts. 95 and 96, this deposit is typical neither of glauconitic mud 

 nor of Globigerina ooze. Reference to the map shows that the three stations lie on the border-line 

 between the great region of oceanic Globigerina ooze to the west, and the area of terrigenous deposits 

 on the landward side. The mixed character of the sediments is thus explained. 



Station 98. 25. ix. 26. Lat. 33 23' S. Long. 15 50' E. 3640 m. (Plate XVII, inset.) 

 Globigerina ooze. A white, extremely fine-grained ooze, consisting almost entirely of frag- 

 mentary foraminiferal tests with some quantity of small unbroken shells of Globigerina and other 

 genera. Among the finest comminuted material, coccoliths and rhabdoliths are abundant. 



Station 101. 14. x. 26. Lat. 33 50' to 34 13' S. Long. 16 04' to 15 49' E. 3734 m. 

 (Plate XVII, inset.) 



Globigerina ooze. A small sample consisting of large tests of Globigerina (up to 0-3 mm. diameter) 

 with comminuted material, some of which is exceedingly fine grained. There are a few fragmentary 



