20 DISCOVERY REPORTS 



417. (Deposit No. 38.) 



18. iii. 04. 71° 22' S, 16° 34' W. Sounding and trawl, 1410 fathoms. 



Glacial Mud and Stones. (Blue Mud.) Bruce records that the trawl gave a rich haul with about 

 60 species. 



Two samples were received : 



A. Sounding: about 150 cc. of grey mud in hard dry lumps which were refractory and did not 

 disintegrate readily. It was dried again and treated with soda. Residue Globigeritwe and fine sand. 

 Very few Radiolaria or sponge spicules and no diatoms. Globigcrina spp. formed quite gS per cent 

 of organisms, the remainder furnished a long list of interesting species including many Lagenae, but 

 the number of specimens was generally small. No Globorotaliae were observed. 



B. A small jar of trawl debris, sponge fragments, coarse sand and abundant large arenaceous 

 Foraminifera. This material was unfortunately in bad condition and was cleaned with difficulty. The 

 spirit had evaporated and the whole was matted together with fungoid mycelium. Some nodular 

 crystals of calcium citrate were common. 



The foraminiferal fauna of this station shows considerable evidence of Pacific water influence. 



418. (Deposit No. 39.) 



19. iii. 04. 71° 32' S, 17° 15' W. Sounding, 1221 fathoms. 

 Glacial Mud and Rocks. (Blue Mud.) 



About 200 cc. of tenacious blue clay, difficult to wash. Nearly all passed through the 150-mesh 

 sieve. Residue a few large sand grains, mud aggregates and fine sand. Foraminifera, except Globi- 

 gerina spp. very scanty, but varied in species. Very few sponge spicules or Radiolaria, and still 

 fewer diatoms which were extremely rare. 



421. (Deposit No. 41.) 



22. iii. 04. 68° 32' S, 10° 52' W. Sounding, 2487 fathoms. 

 Glacial Clay. (Blue Mud.) 



About 200 cc. of tenacious clay, which was washed twice, gave a residue including some sand 

 grains and pebbles up to 4 in. diameter, coated with manganese, also angular sand grains of all sizes. 

 No diatoms and very few Radiolaria or sponge spicules. Very few Foraminifera in coarser residue, but 

 the finer sand when floated with carbon-tetrachloride gave abundant Globigerina spp. and a long list 

 of other forms, many of great interest and some of distinctly Pacific origin. 



422. (Deposit No. 42.) 



23. iii. 04. 68° 32' S, 12° 49' W. Sounding, 2660 fathoms.^ 

 Glacial Clay. (Blue Mud.) 



About 300 cc. of tenacious clay yielded as coarse residue a few small manganese-coated pebbles 

 with Tolypammina vagans sessile on them ; the fine residue consisted of refractory clay aggregates, 

 sand grains, numerous Radiolaria and a few small crystals of gypsum. No diatoms and very few 

 sponge spicules. Foraminifera other than Globigerma pachydertna very rare. 



428. (Deposit No. 43.) 



27. iii. 04. 66" 57' S, 11° 13' W. Sounding, 2715 fathoms. 



Glacial Clay. (Blue Mud.) 



About 300 cc. of very tenacious and slippery clay, extremely refractory. Washed three times it 

 gave very little residue on the 150-mesh silk sieve. A few large sand grains with sessile Tolypammina 

 vagans; clay aggregates, many Radiolaria, frequent crystals of gypsum (small); very few sponge 

 spicules and an occasional diatom. Foraminifera very rare and entirely arenaceous. 



432a. (Deposit No. 44.) 



30. iii. 04. 61" 21' S, 13° 2' W. Sounding, 2764 fathoms. 

 Glacial Clay. (Blue Mud approximating to Red Clay.) 



About 150 cc. of blue clay, laminated and very refractory. It was washed three times and finally 

 1 Note in log : " Ross Deep obliterated. Ross obtained 4000 fathoms, no bottom, in 68° 34' S, 12° 49' W." 



