A GEOLOGIST'S PARADISE 



515 



Photo by Charles D. Walcotl 

 A COOL SEPTEMBER MORNING AT 7.OOO FEET ABOVE SEA-EEVEE 



well shown by the photograph of Mount 

 Huber, on page 518. 



An illustration of a long summit ridge 

 is given by Mount Daly, where every 

 summer storm leaves a fresh coating of 

 snow. I well recall stepping off the 

 limestone onto the snow, thinking it hard 

 and secure, and dropping in tip to my 

 armpits within a few feet of the rock. 

 We were glad to paddle our way back 

 and follow the rocky ridge for miles 

 around to get back to camp. 



Some of the deep canyons were filled 

 up for 1,000 feet or more by dirt, gravel, 

 and boulders washed down from the 

 sides of the mountains, probably during 

 the great Glacial period. Upon the with- 

 drawal of the ice this accumulated mate- 

 rial was rapidly cut away, but occasion- 

 ally masses of it are left high on the 

 sides of a mountain, and often most 

 fantastic forms result from its erosion 

 where the finer beds of gravel and clay 

 are hardened and protected above by 



blocks of sandstone and limestone. One 

 of the most noteworthy examples is that 

 of the so-called Hoodoos, on the slope 

 of Mount Vaux, 18 miles west of Field. 



TAKING THE PHOTOGRAPHS 



The panoramic photographs were taken 

 with the Cirkut camera that is used by 

 newspaper men and others for photo- 

 graphing processions and obtaining pano- 

 ramic views of buildings, railway lines, 

 etc. For use in the mountains several 

 minor changes were made, so that the 

 instrument could be used successfully 

 under such adverse conditions as strong 

 wind, hands and fingers numbed from 

 cold, and often very insecure foundation 

 for the tripod. As it is necessary to 

 have absolute stability and the camera- 

 bed level, the securing of perfect nega- 

 tives is difficult. 



The camera consists of the ordinary 

 &/ 2 by Sy 2 outfit, with a panoramic at- 

 tachment which is 103^2 inches square by 



