i8 DISCOVERY REPORTS 



301. (Deposit No. 17.) 



13. iii. 03. 64° 48' S, 44'' 36' W. Sounding, 2485 fathoms. 

 Glacial Mud and Boulders. (Blue Mud.) 



About 150 cc. of tenacious dark blue mud, drying grey, was washed twice and yielded very little 

 residue of sand grains of all sizes up to J in. No diatoms and hardly any Radiolaria or sponge spicules. 

 A few Foraminifera in the coarser material, but practically none in the fine; entirely arenaceous 

 except for a single specimen of Globorotalia crassa. 



303. (Deposit No. 18.) 



14. iii. 03. 64° 24' S, 43° 18' W. Sounding, 2547 fathoms. 

 Glacial Mud. (Blue Mud.) 



About 300 cc. of tenacious grey mud leaving very little residue ; sand grains of all sizes ; many 

 Radiolaria and a few sponge spicules, but no diatoms. Crystals of hydrated calcium oxalate very rare, 

 only one or two seen. Foraminifera very rare but more varied than usual. The twenty-six species 

 recorded include representatives of the three principal groups, and several interesting forms. Two 

 species of Miliolitw, M. ciradaris and M. venusfa, represent the imperforate, and a single specimen 

 of CassidjiHna laevigata the hyaline Foraminifera ; all the others have agglutinate tests. 



309. (Deposit No. 19.) 



16. iii. 03. 63° 51' S, 41° 50' W. Sounding, 2550 fathoms 

 Glacial Clay. (Blue Mud.) 



About 300 cc. of very tenacious blue grey clay left only 2 cc. residue on the i50-mesh silk sieve; 

 two small pebbles without sessile organisms and fine sand; many Radiolaria and sponge spicules; 

 about six diatoms seen. Foraminifera, except Haplophragmoides subglobosus, almost absent. Five 

 arenaceous species in all were listed. 



312. (Deposit No. 20.) 



17. iii. 03. 62° 56' S, 42° 20' W. Sounding, 1956 fathoms. 

 Glacial Mud. (Blue Mud.) 



About 300 cc. of tenacious blue clay drying in hard lumps which broke down readily, nearly all 

 passing through the 150-mesh silk sieve. Residue a few large sand grains and fragmentary large 

 Foraminifera; many Radiolaria and sponge spicules and fine sand, both quartz and flint. Occasional 

 diatoms, but extremely uncommon. Foraminifera rare but varied, including Spiroplectammina 

 filiformts, Ammomarginulma ensis, Textularia teninssima and Spirolocanimina tenuis. A few of the 

 Radiolaria and diatoms were pyritized — possibly fossils. 



313. (Deposit No. 21.) 



18. iii. 03. 62° 10' S, 41° 20' W. Sounding and trawl, 1775 fathoms. 

 Glacial Mud or sand and boulders over 2 cwt. (Blue Mud.) 



Three samples were received : 



A. Sounding: about 350 cc. of hard lumps of dry blue mud which broke down readily. Residue 

 pebbles and angular sand grains of all sizes ; organisms of any kind except Radiolaria very rare ; a 

 few Foraminifera of many species ; Radiolaria plentiful, sponge spicules not uncommon, and diatoms 

 very rare. 



B. A tube of sand — evidently washings from A. 



C. About 300 cc. of coarse material labelled "Siftings from Trawl". Coarse sand with little 

 mud. Arenaceous Foraminifera abundant, especially Hormosina globulifera, Psammosphaem fusca, 

 Haplophragmoides zveddelkfisis, H. subglobosus and Reophax nodulosus. Porcellanous and hyaline 

 forms very scantily represented. No less than eight species of Thurammina were found at this station. 



338. (Deposit No. 27.) 



28. xi. 03. 59° 23' S, 49° 8' W. (In the Scotia Sea.) Sounding, 2180 fathoms. 

 Diatom Ooze and Volcanic Sand. (Diatom Ooze.) 



