ICE SHEETS AND GLACIERS 



progress. A fine low-level tributary enters at grade 

 just beyond Cathedral Rocks. The majority of the 

 other tributaries have not entered at grade since the 

 main glacier was some two thousand feet thicker. 



On the evening of the thirty-first of January 

 we reached the top of the steeper portion of the Lower 

 Ferrar and found ourselves on a small plateau about 

 3,200 feet above sea level. On the south it received 

 its main supply from the South Arm. From the west 

 it receives no supply, as all the ice from the upper 

 glacier seems to enter the Tavlor Glacier (see Figure 



15)- 



There is no rock outcrop along the Ice Divide 



which separates the Lower Ferrar drainage from the 

 Taylor Glacier drainage. The older maps showing 

 the so-called L^pper Ferrar "* draining into the Lower 

 Ferrar are quite incorrect, though it is possible that 

 a little ice may flow^ almost due north from South Arm 

 into Taylor Valley as Priestley suggests. 



In my opinion the two glaciers are ''apposed" like 

 Siamese twins. No doubt at some earlier period there 

 was a flow across the divide and at a later date the 

 two moieties, Ferrar and Taylor, will be quite dis- 

 connected as they were in the earlier phases of the 

 glacial hemicycle. 



The Beardmore Glacier 



No account of Antarctic glaciation should omit 

 some reference to the largest glacier in the world. The 



■^ The so-called Upper Ferrar Glacier is really the upper half 

 of the Taylor Glacier. (See Figure 15.) 



