504 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
The Boepple Button Company, of Muscatine, Iowa, rendered assist- 
ance in collecting material illustrating the pearl-button industry of the 
Mississippi Valley. 
Tiffany & Co., of New York, made an exhibit of pearls and pearl- 
bearing shells, illustrating the pearl industry of the United States. 
The Fishing Gazette, of New York, exhibited a full set of its 
publications. 
Hon. Nat Cohen, of Urbana, Ill., loaned a mounted and stuffed 
black bass, and Dr. S. P. Bartlett, of Quincy, Il., a mounted and 
stuffed specimen of a muskellunge. 
To Hon. F. Gourdeau, deputy minister of marine and fisheries, 
Ottawa, Canada, acknowledgments are due for permissign to collect 
fishes in Canadian waters during the term of the Exposition. 
PERSONNEL. 
In the preparation of the U.S. Fish Commission exhibit the rep- 
resentative had associated with him as collaborators the following 
employees of the Commission: 
Mr. George A. Schneider, draftsman, to whose skill and taste the 
beautiful design of the aquarium is due. Mr. Schneider also superin- 
tended its construction and assisted materially in the installation and 
arrangement of the exhibits. 
Mr. I. H. Dunlap, chief clerk, under whose direction the systematic 
exhibit of the products of the fisheries was brought together and 
installed. This exhibit, though small, was probably the most complete 
ever made by the Government in the United States. 
Dr. H. F. Moore prepared and installed the exhibit illustrating the 
work ot the Division of Scientific Inquiry. : 
Dr. Hugh M. Smith secured and arranged the collection of Florida 
sponges and the exhibit illustrating the pearl-button industry. 
Mr. H. von Bayer designed the model of the improved Cail fishway. 
Messrs. C. H. Townsend, KE. E. Hahn, E. F. Locke, F. F. Dimick, 
C. W. Scudder, C. G. Corliss, and J. F. Ellis rendered material assist- 
ance in collecting and preparing boat models, fishing apparatus, charts 
and photographs, illustrating the offshore fisheries of New England. 
Mr. R. J. Conway installed the machinery used and was superin- 
tendent of the aquarium throughout the Exposition, and in the absence 
of the representative was in charge of the entire exhibit. Much of 
the success attained in the maintenance of the aquarium was due to his 
untiring energy, industry, and ingenuity. 
Mr. M. C. Marsh, pathologist of the Fish Commission, rendered 
valuable services in connection with the treatment of fish diseases and 
prepared the matter on that subject in this report. 
Mr. W. P. Sauerhoff and Mr. W. E. Morgan had charge of the 
general preparation, packing, installation, and maintenance of the fish- 
