XXIX.-LISTS OF THE DREDGING STATIONS OF THE U. S. FISH 

 COMMISSION, THE U. S. COAST SURVEY, AND THE BRITISH 

 STEAMER CHALLENGER, IN NORTH AMERICAN WATERS, FROM 

 1867 TO 1887, TOGETHER WITH THOSE OF THE PRINCIPAL 

 EUROPEAN GOVERNMENT EXPEDITIONS IN THE ATLANTIC 

 AND ARCTIC OCEANS. 



Prepaked by Sanderson Smith. 



PREFACE. 



The records of the dredgings and trawliogs executed by the U. S. 

 Fish Commission from 1871 to 1879 were published in the Fish Com- 

 mission Eeport for 1879 by the author and Mr. Richard Rathbun ; those 

 of the Fish HawJc from 1880 to 1882 in the Bulletin of U. S. Fish Com- 

 mission for 1882, by Mr. Richard Rathbun ; those of tha Albatross from 

 1883 to 1886 in various volumes of the Fish Commission reports. The 

 dredgings of the Fish Eawlc from 1883 to 1887 and of the Albatross in 

 1887 have not yet been published. 



Although separate copies were printed of the lists from 1871 to 1882, 

 the scattered manner in which most of these lists appeared in various 

 publications and associated with great masses of other material has 

 rendered it very difficult to bring together a complete series of them. 



The completion of the accompanying series of charts, on which all 

 the dredging positions of the U. S. Fish Commission, the U. S. Coast 

 Survey, and the British steamer Challenger in Korth American waters 

 are laid down, has rendered it desirable to bring together and complete 

 all these scattered lists, together with those of the Coast Survey and 

 the Challenger. The opportunity has at the same time been taken to 

 collect together the records of the dredging operations undertaken by 

 the British, French, Italian, IS; orwegian, Swedish, and other European 

 Governments in the Atlantic and Arctic, the results of which are of al- 

 most as much importance to us as of those carried on upon our own coasts. 

 These are scattered through a great number of works in various lan- 

 guages, aTid many of them very difficult to find, and have in many cases 

 never been reduced into the form of tables ; so that the task of bring- 

 ing them together and putting them into shape has been a somewhat 

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