I02 NATURE STUDY. 



posed than most varieties of that rock. Here the elements 

 find few joints in which to get a foothold for work. The ero- 

 sion is by decomposition and grinding. The bowlders are 

 mostly too large to be moved by anything less than storm 

 waves, but these lift even the largest and dash them against 

 the face of the ledge and gradually grind it away. The il- 

 lustration can hardly show the concavity that is so plainly 

 seen in the rock itself. It is a fine example of the grind- 

 ing power of the storm waves armed with bowlders. 



What is shown here may be seen wherever the conti- 

 nental rocks and ocean meet. The softer element ov^er- 

 comes the harder, and in the end the land disappears, un- 

 less uplifting goes on with the erosion. 



Another Nest That Failed. 



BY ALICE BLAKE CURRIER. 



Perhaps it ought not to be set down at the ver^^ outset 

 as a decided failure, for although no happy nestlings were 

 reared to enjoy life, still it served to impress on our minds 

 a different feature of bird life from any we had hitherto ob- 

 served. 



Early in June, while making preparations for a jaunt 

 into the country, I noticed that a robin was also busily en- 

 gaged in an adjoining maple, flying back and forth with 

 material for a nest, and surely enough, by a little friendly 

 espionage, I succeeded in learning that the foundation 

 was already laid for a future home. 



I thought nothing more of this event until we had re- 

 turned, and happening to recall my new bird neighbor, 

 yes, there she was, brooding on the nest, now long since 

 completed. 



Well, very cold rains followed and this poor nest, evi- 

 dently fashioned by a young and inexperienced couple of 



