10 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [8] 
SCHEME OF INVESTIGATION. 
GENERAL ANALYSIS. 
I. Natural history of marine products (the objects of the fisheries). 
II. The fishing-grounds (places of prosecution of the fisheries). 
III. The fishermen and fishing towns (the men engaged in the fish- 
eries.) | 
IV. Apparatus and methods of capture (manner of prosecution of the 
fisheries). 
V. Products of the fisheries (first results of the fisheries). 
VI. Preparation, care of, and manufucture of fishery products (elabo- 
ration of results. 
VII. Economy of the fisheries (financial organization and methods). 
VIII. Protection and culture (oversight by government). 
Notrre.—The following headings are arranged with reference to the 
manner in which they will be discussed in the final report. At the end 
of each section are given suggestions regarding methods of investiga- 
tion and subjects which are particularly important. 
I—NATURAL HISTORY OF MARINE PRODUCTS. 
MANNER OF DISCUSSION IN REPORT. 
Each species in the following groups which is in demand for, or avail- 
able for, food or other economic uses, should be considered separately. 
An outline engraving may be given for the sake of identification, and 
the popular names in use in different parts of North America. <A brief 
abstract should be given of the important facts in its natural history, 
telling what is known of (a) its geographical distribution; (b) size; (¢) 
abundance; (d) migrations, if such occur; (e) food and rate of growth; 
(f) mode of reproduction; (g) economic value and uses: 
Seals. 
Whales. 
Turtles. 
Fishes. ? 
Lobsters, crabs, shrimps, ecrevisses, &c. 
Oysters, clams, mussels, &c. 
Sponges. 
Marine plants. 
Inorganic products of the sea. 
These being products of the sea and properly to be considered in a 
treatise upon the fisheries. 
METHOD OF INVESTIGATION. 
When opportunities occur, the stomachs and genitalia of marine ani- 
mals should be examined, to ascertain the nature of their food and the 
