SCIENTIFIC RESULTS 



proved by the fact that in places thin veins arising from 

 it can be seen cutting across the granite both above and 

 below, and even in one or two cases enclosing large masses 

 of that rock, which thus appear to have been caught up 

 in the dolerite. 



On the north side of the Bluff, which forms the western 

 and upper extremity of the Kukri Hills and separates the 

 east fork of the glacier from the Dry Valley, this structure 

 is very conspicuous and the lower sill of dolerite appears 

 to divide, one branch running upward and joining the 

 upper sill, whilst the other and main branch runs down- 

 ward at a slight angle for a short distance, is lost for fifty 

 yards behind a large talus heap, and reappears at a lower 

 level where it becomes first horizontal and then can be 

 traced as far as the horizon as a broad black band with a 

 very shght upward trend for the last mile or two. From 

 the upper dolerite sill small veins extend downward into 

 the granite below, and in the Blufi*, at the upper end 

 of the Kukri Hills a branch runs from the lower to the 

 upper sill. 



The main object of our journey up the Ferrar Glacier 

 was to examine the Beacon sandstone at any accessible 

 exposures with a view to the discovery of any traces of 

 former organic life, and with this object I carefully ex- 

 amined at every halting-place the sandstone blocks in 

 the moraines amongst which we frequently encamped, but 

 without success. Had there been originally any organic 

 remains the probabilities are great that they would have 

 been in nine cases out of ten obliterated by the intense 

 amount of weathering that the rocks had undergone. The 

 more resistant of the blocks were coated, in many cases, 

 with a hard crust of carbonate of lime derived from the 

 original cementing material, and in places as much as an 

 eighth of an inch in thickness, and those which were 

 originally held together by a soluble cement were so friable 



333 



