8 BULLETIN 709, IT. S. DEPARTMENT OF AGRICULTURE. 
Shad. 
Shad roe. 
Smelts, eulachon, etc. 
Squid. 
Weakfish. 
Whitefish. 
Whiting. 
Mackerel (excepting Spanish). 
Rock fishes (including grey and red 
cod). 
Sablefish (black cod). 
Salmon, fall. 
Salmon, silver. 
Salmon, others. 
Sea bass. 
In order to relieve the congestion of work on compilations at the 
first of the month, incidental to the preparation of other storage re- 
ports, and thus enable the bureau to handle its work more economic- 
ally, the reports for fish are obtained for the 15th of each month. 
METHODS OF SECURING INFORMATION. 
Tn securing the information two methods were available, one being 
to obtain reports from the owners of the goods, and the other to ob- 
tain the data from the cold-storage warehouses. Obviously one or the 
other of the methods had to be rigidly adhered to in order to prevent 
duplications. 
The latter method was adopted, as it required a much smaller list 
of reports with less chance of error, and it was believed that co- 
operation could be secured more readily from the warehousemen 
than from the owners of the products. The principal difficulty en- 
countered in the beginning of the work was the lack of any complete 
list of cold-storage warehouses. Various lists were consulted, but 
none proved complete. The first apple report was based on the hold- 
ings as reported by 289 cold storages. That the list was very incom- 
plete is shown by the fact that the report of June 1, 1917, showed the 
apple holdings of 569 warehouses. 
In June, 1916, the work of compiling a complete list of cold- 
storage warehouses was begun. Circulars were sent out to a list of 
more than 3,000 firms compiled from various sources. They were 
sent to all firms listed in any available records which, judging from 
their advertisements and descriptions of their business or equipment 
in trade publications and journals, might be conducting cold-storage 
plants. In addition, one cooperating firm in each city was asked to 
furnish a list of all cold-storage plants in that town. The returns 
were classified and resulted in increasing the list of known cold- 
storage warehouses to more than 1,000. Since that time many names 
and addresses have been secured from various sources, and the list 
has been extended to include packing-house plants having refrigerat- 
ing apparatus. There were 1,450 names on the list of the Bureau 
of Markets on January 1, and it is believed it included practically all 
of the cold-storage plants in the country. 
Blank forms are furnished to the cold-storage firms on which to 
submit their reports. These forms are mailed on the 8th and the 24th 
