ALPINE SCULPTURE. 



247 



the glacier at the hut B, and the lowest line C, the fol- 

 lowing are the mean hourly motions of the three lines, 

 deduced from observations which extended over several 

 days. On each line eleven stakes were fixed, which are 

 designated by the figures 1, 2, 3, &c. in the Tables. 

 Morteratsch Glacier, Line A. 



No. of Stake. 

 1 . 



Hourly Motion. 



. 0.35 inch. 



. 0.49 



. 0.53 



. 0.54 



. 0.56 



. 0.54 



. 0.52 



. 0.49 



. 0.40 



. 0.29 



. 0.20 



As in all other measurements of this kind, the re- 

 tarding influence of the sides of the glacier is manifest: 

 the centre moves with the greatest velocity. 



No. of Stake. 



Morteratsch Glacier, Line B. 



Hourly Motion. 



. . . . 0.05 inch. 



. . I . 0.14 



. . . 0.24 



. . . , * *& . 0.32 



. . . *.. . 0.41 



. .0.44 



; . .0.44 



. 0.45 



r.: 0.43 



^ ... . . . . .0.44 



. 0.44 



The first stake of this line was quite close to the 



edge of the glacier, and the ice was thin at the place, 



hence its slow motion. Crevasses prevented us from 



carrying the line sufficiently far across to render the 



17 



