
and another maintained by the military authorities on the Rock Island arseal, 
No others were heard of, There aré numerous excellent opportunities for farm 
refuges, especially in the lake region of the northeast, 
Baiting is universal on all private duck grounds along the Illinois River, 
) but is not practiceé in the other part of the state, The amount of grain 
used per season is indicated by the following instances: 
Instance No, Year Bushels Corn Acres Bushels per acre Remarks 
Ai 1928 1,300 3 430 On refuge 
2 1928 6,600 20 | 330 
o 1928 7,000 ? ? ‘Per season 
1.club. 
Corn is usually used for mallards, but barley is used where canvas- 
backs are to be baited, 
Baiting is also practiced on dry grouns, often far removed from 
water, especially on the sandhills in the bend of the Illinois River in Mar- 
shall County. One commercial preserve operating a dry’ bait ground of 40 
acres is said to have yielded a kill of 4,000.ducks in 60 days, or 100 ducks 
per acre per season. When this is compared with the duck-producing power 
of even the best acre of breeding ground, the real meaning of the words 
"concentration area" becomes more apparent, 
Shooting Practice as to Guns & Flocks. Per Cent Cripples. Commercial pre- 
serves and toll farms place 6 or even 10 guns to a single "pen" of live de- 
coys. It is frequently compulsory to shoot only at flocks small enough to 
be cleaned up. One objection to dry bait grounds is that the flocks which 
eome in are too large to be "cleaned", Pot-shooting on the water or ground 
is prevalent, especially on commercial preserves and toll farms. 
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