46 ALASKA FISHERIES AND FUR INDUSTRIES IN 1915. 
important item. Insuch cases, if use is made of the cannery waste, 
it will be necessary for the canneries to install the required machinery 
for reduction purposes. 
Extensive investigations along this lime have been made by Dr. 
J. W. Turrentine, of the Department of Agriculture. That depart- 
ment’s interest in the matter lies in the fact that it has been studying 
the problem of developing new sources of fertilizers; also, it has given 
consideration to the manufacture of food for chickens and cattle 
from fish scrap. A document setting forth these matters in detail 
has been issued by the Department of Agriculture. 
STATISTICAL SUMMARY. 
Consideration under this head is given only to the manufacture of 
oil and other products from salmon-canning waste. The production 
of oil and fertilizer from herring will be found elsewhere in this report 
under the heading of the herring fishery, while the yield of oil and 
fertilizer in the whale fishery is shown under the discussion of that 
subject. 
Two plants were operated in the by-products industry in Alaska 
in 1915. The investment totaled $127,879 as against $116,607 in 
1914. The number of persons employed in 1915 was 85, all whites, 
of whom 77 were shoresmen and 8 were transporters. The number of 
persons engaged in 1914 was 32. There was a distinct gain in the 
output of this industry in 1915, its value in that year amounting to 
$40,255, whereas in 1914 it was worth only $6,114. 
Ourrut In By-Propucts INDUSTRY IN ALASKA IN 1915. 
Items. ’ | Quantity. Value. 
0 Den nn tan eee SES eRe Mas BSS Naeem SEE SN NOAS soe gallons. . 47,976 $14, 227 
Mentilizar sesso atne= tet Pe Cheater eR ee eee enn) ete cee eee eeece tons. . 43 1,305 
idiblefishimiealsest ee econ sce ene eee eee eee eee eee eee ee ceer eee doce: 738 24, 723 
Mo] ks) FAR A ar nociok Bacon aobciagoc «fines Cone bOS Ae Cen MOaanoo ues] sasdcor| assed: aogke 40, 255 
SALMON IN THE YUKON. 
Salmon fishing in the Yukon River is confined to operations of 
limited extent, the object of which is to supply certain demands for 
local consumption, including the use of salmon for dog feed. The 
species taken are chinook, coho, andchumsalmon. The chief method 
of capture is by means of small wheels, of which it is estimated that 
there are 200 in use throughout the entire extent of the Yukon in 
Alaska. In the lower reaches of the stream the natives use a form 
of set net instead of the small wheels which are used farther up- 
stream. 
