i6 DISCOVERY REPORTS 



minerals found in this area (pp. 13-14 and et seq.) as formed in situ, it seems probable 

 that the rate of deposition must be very slow indeed. 



ACKNOWLEDGMENTS 



I have to thank the Director (Mr T. Rowatt) and Dr A. C. Stephen of the Royal 

 Scottish Museum, Edinburgh, for the opportunity of examining the Scotia material. 

 All types, station slides and species preparations have been deposited in that museum, 

 for preservation with the rest of the Bruce collections. I have also to thank Dr 

 S. W. Kemp, F.R.S., the Director, and Mr G. E. R. Deacon, of the Discovery staff, 

 for constant advice and assistance ; Dr W. A. Macfadyen of Baghdad for his report 

 on the fossil Foraminifera ; Professor J. Pia of Vienna for identification of the fossil 

 Alga; and Mr F. A. Bannister and Mr M. H. Hey, of the Mineral Department of the 

 British Museum for reporting on the minerals. Lastly, but not least, I thank the 

 Discovery Committee for undertaking the publication of this report. 



LIST OF STATIONS 



A list of the stations within the Antarctic convergence which were worked over is 

 given below. The positions of the stations are shown in Fig. 2. 



226. (Deposit No. 8.) 



17. ii. 03. 64° i8' S, 23° 9' W. Sounding, 2739 fathoms. 



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



About 300 cc. of tenacious blue-brown clay which was difficult to wash and was dried twice. 

 Only I cc. residue left on 150-mesh silk sieve — sand grains of all sizes, and a few Radiolaria. Pumice 

 and volcanic glass in the finer residues. Abundant crystals of hydrated calcium oxalate. Foraminifera 

 very rare, but twelve species were identified, all arenaceous except Globigerina pachyderma. 



280. (Deposit No. 11.) 



2. iii. 03. 68° 40' S, 30° 18' W. Sounding, 2511 fathoms. 

 Glacial Clay. (Blue Mud.) 



About 150 cc. of tenacious blue clay, leaving only i cc. residue on 200-mesh silk sieve after 

 trouble in washing. Foraminifera very rare with the exception of Haplophiagmoides subglobosiis, and 

 entirely arenaceous. 



282. (Deposit No. 12.) 



3. iii. 03. 68° 31' S, 32° 8' W. Sounding, 2452 fathoms. 1 

 Glacial Clay. (Blue Mud.) 



About 300 cc. of highly tenacious and slippery blue clay left only about 0-5 cc. residue on 

 150-mesh silk sieve. A few coarse sand grains, some fine sand and mica. Foraminifera extremely 

 rare, only seven species, all arenaceous. 



286. (Deposit No. 13.) 



5.111.03. 68° 11' S, 34° 17' W. Sounding, 2488 fathoms. 



Glacial Clay. (Blue Mud.) 



About 150 cc. of tenacious grey clay of a very refractory nature. It was dried and washed twice, 

 and finally broken down with hot soda. Residue i cc, consisting of abundant sand grains of all sizes, 

 abundant Globigerina pachyderma and many small Lagenae and other calcareous Foraminifera. 



1 The nature of the deposit is that stated in tlie Station Log; the words in brackets indicate the area in 

 which the station is situated on Pirie's chart. 



