540 



Illinois Natural History Survey Bulletin 



Volume 23 



Duck — continued 



laws relating to, 327—72 



bag limit, 327, 328, 331, 332, 359, 368, 370, 



371 

 baiting, 327, 328, 331, 333, 356, 358, 364, 



370, 371 

 California, 331 

 Canada, 327, 328 

 Dakota territory, 332 

 decoys, live, 327, 328, 331, 333, 356, 364, 



370, 371 

 England, 328 

 favoring depleted species, 328, 332, 361, 



370, 371 

 history of, 328, 329, 331, 332, 333 

 hunting zones, 329, 331, 332, 355, 356, 367 

 Illinois, 327-71 

 Iowa, 331 

 Kentucky, 331 

 Massachusetts, 333 

 New Jersey, 331 

 Ohio, 331 

 Oklahoma, 331 

 open season, 327, 328, 331, 334, 340, 354, 



355, 356, 361, 368, 370, 371 

 Pennsylvania, 331 

 possession limit, 331, 370 

 Rhode Island, 328 



shell limit, 328, 331, 333, 368, 370, 371 

 shooting hours, 328, 331, 332, 356, 368, 370, 



371 

 South Dakota, 333, 362 

 territories, 328, 370; sec also Dakota 

 territory {abo've) 

 mortality, 336 



quotient, 335, 340 

 populations, 327—72 



density, influence of, 351, 356 

 productivity, 361; see also Wood duck 

 shooting pressure on species, 334, 335, 340, 



341, 361, 369 

 shooting pressure index, 358, 359 

 shooting pressure quotient, 335, 336, 340 

 vulnerability of species, 334, 335, 336, 340, 



361, 370 

 vulnerability quotient, 334, 335, 340 

 Duck Island Preserve, 327, 351, 354, 355, 359, 



360 

 Duck potato, 339 

 Ducks Unlimited, 370 



E 



Ectoparasites, 472 



8-hydroxyquinolin sulfate injections; see Elm 

 Elaeagnus, wetwood of, 407 

 Elgetol injections; see Elm 

 Elm {see also specific references) 

 bacteria attacking 



Erwinia nimipressuralis, 423, 429, 430, 



433, 439, 444, 445, 446 

 Pseudomonas lignicola, 422 



Elm — continued 

 diseases 

 dieback, 415, 416, 417, 423, 430 



flux, 411, 412, 417, 423, 429, 431, 433, 434, 



445, 446 ; see also slime flux 

 leaf drop, 416, 423 

 malachite green tests, 441 

 slime flux, 408, 411; see also flux 

 soil tests, 443 

 wetwood, 407-48 



bacterial isolations, 418 



branch pathology, 414 



copper sulfate injections, 439, 440, 441, 



443, 446 

 distribution, 408 

 8-hydroxyquinolin sulfate injections, 439, 



440, 441, 443, 446 

 Elgetol injections, 441, 443 

 foliage pathology, 416 

 gas analysis, 436 

 growth associations, 444 



Helione injections and feeding, 439, 446 



histology, 419 



hosts, 408 



inoculations, 423 



mercuric chloride injections, 439, 440, 



441, 443, 446 

 organism, 420 



biochemical reaction, 422 



cultural characters, 420 



morphology, 420 



taxonomy, 422 

 pH of sap, 438 



pressures in affected elms, 410, 430 

 root pathology, 413 

 sap analysis, 437; see also pH of sap 



{abo've) 

 seed tests, 444 

 silver nitrate injections, 439, 440, 441, 



443, 446 



trunk pathology, 409 

 urea feeding, 439 

 wilt, 410, 412, 414, 416, 417, 418, 423, 425, 

 426, 429, 430, 431, 432, 439, 440, 441, 



444, 445, 446 

 toxicity tests for, 425 



as source of squirrel food, 465, 466, 489, 490, 

 492, 493, 496, 497, 504, 506, 520, 522, 

 531, 532; see also specific references 

 Elodea, 377 

 Embarrass River, 492 

 Endomyccs magnusii, 408 

 Endoparasites, 472 

 England, waterfowl hunting regulations in, 



328 

 English elm 

 dieback, 423 

 flux, 423 

 leaf drop, 423 

 wetwood, 408, 423, 445 



bacterial isolations, 418 

 wilt, 423 



