INTRODUCTION XXXI 



The maps have been prepared under the direction of 

 Mr. Henry Gannett, Chief Geographer, United States 

 Geological Survey. 



The first and second volumes contain the narrative of 

 the Expedition and a few papers on subjects believed to 

 be of general interest. The technical matter, in the fields 

 of geology, paleontology, zoology, and botany, will follow 

 in a series of illustrated volumes. Twenty-two special 

 papers, based on collections made by the Expedition, have 

 been already published in the Proceedings of the Wash- 

 ington Academy of Sciences and others will follow. All 

 of this material will be brought together in the volumes 

 of the technical series. 



Lists of the members and committees of the Expedition 

 and of the officers and crew of the vessel are appended. 



The labor of editing and seeing through the press the 

 material contained in the present volume, and of selecting 

 subjects for illustration and securing their proper repro- 

 duction, has occupied practically all the time of the editor 

 outside of his official duties, since the return of the Expe- 

 dition nearly two years ago. 



C. Hart Merriam, 



Editor. 



Washington, D. C, 



June 15, 1901. 



