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THE NATIONAL GEOGRAPHIC MAGAZINE 



Photo 



THF, AUTHOR READY TO TAKE) A PA NORA M 

 SUMMIT OP MOUNT PlEXD 



4 inches in thickness. When the latter is 

 used the tripod head is a 12-inch gradu- 

 ated circle with the revolving bed above. 

 A ratchet, driven by springs, moves the 

 camera around the circle, the speed being 

 governed by fans. Our lens is a Bausch 

 and Lomb Zeiss Protar, Series VII. 



The long panoramic view had an ex- 

 posure of one-tenth of a second over 

 each part of the film. The film moves 

 past a vertical half-inch aperture from 

 right to left as the camera is revolving 

 from left to right. With this instrument 

 a view can be taken 8J/2 inches in height 

 and of any desired length up to 10 feet. 

 Two persons can readily carry the outfit 

 anywhere that one can ordinarily climb. 

 Under unusually difficult conditions the 

 camera can be drawn up by a rope. 



Often in the Canadian 

 Rockies days will pass 

 in which the atmospheric 

 conditions are unfavor- 

 able for an extended 

 view — dust blown in 

 from the plains, smoke 

 from forest fires, or the 

 indefinite summer haze 

 and cloudy weather in- 

 terfering. The best con- 

 ditions usually occur 

 just after a heavy storm 

 of either snow or rain 

 has cleared the air. 



One really great pano- 

 ramic view and a half 

 dozen fine smaller views 

 is a successful season 

 with the camera when it 

 is used as an adjunct to 

 hammer and compass in 

 geologic work. 



From the vicinity of 

 the Burgess Pass camp 

 the views were most 

 beautiful and varied, and 

 changed from hour to 

 hour during the day and 

 from day to day with 

 the varying atmospheric 

 conditions. Emerald 

 Glacier, directly facing 

 camp (page 513), was 

 always attractive, whether in the bright 

 sunlight, the gray light of early morning, 

 the shadows of sunset, or when snow 

 and fog were sweeping over the range, 

 giving only now and then a glimpse of 

 the ice and cliffs. The light-colored 

 moraines on either side of its foot and 

 the dark rocks afforded a beautiful set- 

 ting for the glacier. Across the Yoho 

 Pass the cliff of Mount Wapta stood in 

 bold relief, with a steep slope of broken 

 rock on the western side and a huge 

 bank of snow on the eastern side of its 

 south ridge. 



Rising back of camp was the beautiful 

 cliff of Mount Burgess, a favorite haunt 

 of the mountain goat. At its eastern 

 foot on the narrow ridge is the point 

 wdiere the great panoramic view was 



by Sidney S. Walcott 



ic view Prom 



