Journal of experimental zoology . Mallard X East Indian experiment. 1 Mallard d. 2 Mallard?. 3 Extracted F2 mallard male dark type (contaminated). 134 PLATE 6 ^i4 I. xtracted Fo mallard male practicallj- pure mallard. xtracted Fo 9 mallard, showing a bird darker all over than pure mallard,the lower abdomen sooty; all females are like this. 135 HYBRIDIZATION AMONG DUCKS AND PHEASANTS JOHX C. PHILLIPS

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1904