60 NARRATIVE OF THE SECOND AND THIRD EXPEDITIONS. 



scientific work, the bread that is cast upon the waters may be found only after many 

 days. We have at all events succeeded in carrying out the wish of Darwin for a 

 core from a depth of 500 to 600 feet in a coral atoll in the Pacific Ocean. We trust 

 that the results of the study of the ample material from our 1114 feet bore, which is 

 now completed by our co-workers in the Northern Hemisphere, and apj^ears in the 

 later j)art of the present volume, may enable zoologists and geologists to lay more 

 surely the foundations of our knowledge of the origin and growth of coral atolls, and 

 so make our work of some use to science. 



