236 WAVES OF SAND AND SNOW 



On another side of the hill is a track from 

 another slate-quarry (Cove Quarry), on which 

 sledges are also employed. On this track also 

 I found undulations, but they were not so highly 

 developed as on the Saddlestone Quarry track. The 

 roadway itself was very loose, wet, and slushy. 

 A group of four ridges measured from crest to 

 crest 1 3 feet, 1 8 feet, 1 3 feet, and 1 5 feet, with 

 an average wave-length, therefore, of 14 feet 

 9 inches. The sledges were similar to those used 

 upon the Saddlestone Quarry track. The experi- 

 ments subsequently made convinced me that the 

 inferior development of the cahots on the Cove 

 Quarry track was due to deficiency of binding 

 power of road material. 



Experiments upon the Production of " Cahots.'' 



I proceeded to experiment upon the production 

 of cahots. Obtaining a large basket which had 

 a form something like a Laplander's sledge, I 

 repaired to the little beach of sand and shingle 

 on the shore of Coniston Water, near the steam- 

 boat pier. Having weighted my " sledge," which 

 was not on runners, and should, therefore, have 

 produced undulations more quickly, I hauled it 

 about on the coarse sand and fine shingle of 

 the highest portion of the beach, several feet 



