CLOUDS AND RIVERS, ICE AND GLACIERS. 9d 



§ 33. Winter Motion of the Mer de Glace. 



233. Here are the measurements executed in the 



winter of 1859 : — 



Li> t e No. I, 



Stake ..12 3 4 5 6 78 9 10 11 

 Inches . . 7 11 U 13 14 14 16 16 12 12 7 



Line No. II. 

 Stake ..123456789 10 

 Inches .. 8 10 14 16 16 16 18 17 15 14 



234. Thus the winter motion of the Mer de Glace 

 near the Montanvert is, in round numbers, half the 

 summer motion. 



235. As in summer, the eastern side of the glacier al 

 this place moved quicker than the western. 



§ 34. Motion of the Grindelwald and Aletsch Glaciers. 



236. As regards the question of motion, to no other 

 glacier have we devoted ourselves with such thorough- 

 ness as to the Mer de Glace ; we are, however, able 

 to add a few measurements of other celebrated glaciers. 

 Near the village of Grindelwald in the Bernese Ober- 

 lancl, there are two great ice-streams called respec- 

 tively the Upper and the Lower Grindelwald glaciers, 

 the second of which is frequently visited by travellers 

 in the Alps. Across it on August 6, 1860, a series of 

 twelve stakes was fixed by Mr. Vaughan Hawkins and 

 myself. Measured on the 8th and reduced to its daily 

 rate, the motion of these stakes was as follows : — 



