liv 



THE VOYAGE OF IT. M.S. CHALLENGER. 



Errant" and "Triton," to the explorations of Alexander Agassiz in the U.S. Coast 

 Survey steamer " Blake," to the work of the Italians in the ship " Washington," to the 

 French expeditions in the " Travailleur " and " Talisman," or to the systematic researches 

 of the United States Fish Commission. 



The work done by all of these was of the same general character ; they were in 

 many respects supplementary, and, as a result, the science of abysmal research has been 

 founded and carried on to a prosperous state of development. This science cannot, 

 from its nature, advance slowly and gradually ; it must proceed by strides, which will 

 probably be as far apart in point of time as they are important with respect to 

 discovery. 



