SMITHSONIAN INSTITUTION. 



UNITED STATES NATIONAL MUSEUM. 



INSTRUCTIONS FOR COLLECTING MOLLUSKS, 



AND OTHER USEFUL HINTS FOR 



THE CONCHOLOGIST. 



WILLIAM H. DALL, 



Jionorary Curator of the Department of Mollusks, U. S. National Museum. 



Part G of Bulletin of the United States National Museum, No. 39. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1892. 



