SYSTEM OF CLASSIFICATION, 5 
The next group, No. 39, comprehends fresh water fish- 
ing and angling. Under its several classes will be ex- 
hibited nearly all of the interesting objects pertaining to 
the gentle art of angling, although its scope also embraces 
such apparatus and appliances as are used in the commercial 
fisheries prosecuted in fresh water. _ 
The products of the fisheries, the machinery and ap- 
pliances used in their manipulation or preparation, will_be 
classed in group numbered 40. This will embrace models 
of fish curing establishments and canneries, as well as meth- 
ods of, and models, and other forms for representing appli- 
ances for drying, curing, salting, smoking, tinning, cooking 
and other methods of treating or preserving fishery products. 
Primary and secondary products of all kinds, as well as 
tinned goods, are also embraced within this group. Fish 
preservatives, antiseptic and otherwise; oils obtained from 
marine animals; manures, guanos, fertilizers, as well as other 
classes of products are arranged under this group. 
Pearl shells from the ocean and rivers; mother of pearl, in 
the rough or manufactured; pearls as gems; sponges, corals, 
and all parts and products from aquatic animals, whether for 
purposes useful or ornamental, will be embraced in this 
group. : 
The history of fish culture, and everything pertaining to 
the artificial propagation, acclimatization and transportation 
of aquatic animals may be exhibited under Group 41. 
This group is very comprehensive in scope, and is intended 
to embrace everything appertaining to investigations and re- 
sults of experiments in the direction of utilizing the waters 
as a means of food supply. 
