78 ‘YU. S. BUREAU OF FISHERIES. 
RESULTS oF TESTS WITH HERRING Mitr AS Foop ror Ratinpow Trour—Contd. 
NEOSHO (MO.) STATION. 
{Test continued for 30 days—2,000 fish per trough. ] 
Weight per 1,000 fish. 
Loss per 
Trough 
: 1,000 fish 
spare Food used. At be- | ateng | Gained during 
, ginning of fafitest during test. 
test. Se test. 
Ounces. | Ounces. | Ounces. |P er cent. 
1 ees Canned herring milt 3 days, beef hearts 3 days, alter- 
ee ela bes Sees einige iSiaiaie sistem erates nlclessicioe Saree eens 6 124 64 1 
Dee S58 Canned herring milt 3 days, sheep liver 3 days, alter- 
Tatelyz ¢s52i34-< 2. ot SEs. Ce ee ee 6 114 53 55 
Beer Beet heart=<-- ees aciascacsgqncst ase sacn case egnaseeeee 6 193 132 + 
Ch eere Sheep diver s2. Satanic isons dee dace eeeccer semeeeeee 6 12 6 4,5 
WHITE SULPHUR SPRINGS (W. VA.) STATION. 
[Test continued for 20 days—10,000 fish per trough. ] 
Canned herring milter 2k See eens aececeser oeemaee 
a 43 8} 4 124 
Deas spar5 < Sheep liven; : jsais-\-cehe- eit st see eeuet ho ebaacee os 43 94 5 Lis 
Buccs aac Canned herring milt 10 days, sheep liver 10 days, alter- 
MAGlY <2 OE fas SRE AEEEEL OE ERE. «Rasen 4h | 9 5 is 
¥ | | 
WYTHEVILLE (VA.) STATION. 
[Test continued for 10 days—13,000 fish per trough. ] 
lege Bee | Canned Herring mili Ai 229. fi 53N. Ses e ee e | 43 D 4) 722 
Dee a: | Beof heart... 0-222 sitet | 4t 6t 1; | 314 
Rescue Operations. 
[C. F. CULLER, in Charge.] 
OUTLINE OF POSSIBLE EXTENSION. 
So much has already been said regarding the importance of the 
rescue operations conducted in the Mississippi Basin, their value, 
simplicity, practical returns, and comparatively low cost that these 
phases of the work should be familiar to all interested persons. A 
brief outline of the possibilities of extending the work, with sugges- 
tions as to its requirements, may not be out of place, in view of the 
bill now pending before Congress to provide funds for enlarging 
its scope. Almost unlimited possibilities exist for the further ex- 
tension of the work. In the bureau’s greatest effort during the fiscal 
year 1920, when approximately 160,000,000 of fishes were saved, not 
more than 40 per cent of the available territory was covered. There 
are many miles of unbroken stretches of river lowlands where floods 
annually result in the destruction of millions of fish, while the major 
tributaries of the Mississippi afford a field of unknown possibilities. 
For the economical and efficient conduct of the work it would be 
desirable to establish headquarters near the central point of the 
more important operations, with a personnel available for its prose- 
cution at all times. Under present arrangements the personnel for 
the rescue work is drawn from four of the regularly established 
