INTRODUCTION. XV 



wliole cost of moviug a coUcctiou exceeding iiiue thousand cubic feet, 

 and weighing- many tons, as far as Bremen at least, has been limited to 

 the mere matter of cartage and loading. 



SPENCER r. BAIRD, 

 United States Commissioner of Fish and Fisheries. 

 Smithsonian Institution, 



Washington, U. S. A., March 29, 1880. 



