INTERACTION OF SEA AND lAND 5 



exhibits. These facts arc, as is the case with all the extended 

 phenomena of nature, much entangled with each other; all 

 united in the common features which the earth always pre- 

 sents to the untrained eye. It is well for the student to 



Shakespeare Cliff, near Dover, England 



Showing^ the eflfect of heavy waves on rather soft rocks. The steep beach at the base of the cliff is com- 

 posed of fragments of flint originally scattered through the mass of chalk which forms the headland. la 

 times of heavy storm the sea enters the slight caves which appear in the lower portion of the precipice. 

 Recently fallen masses are shown at the extremity of the headland. 



remember, as a protection against discouragement, that this 

 blended aspect of the work which is clone on the earth, is 

 what appears to every beginner in inciuiry. All science indeed 

 has come to exist through the patient labors of students who 



