Journal of experimental zoology . These six colors will be described in detail, as theyare treated individually. The particular individuals mentionedin this work are among those used in the breeding experimentsof the Department of Experimental Breeding at the Universityof Wisconsin. They are of known parentage and genetic con-stitution and can be identified in other publications of thisdepartment (Cole 12, 14) since the birds are referred to bytheir permanent record numbers. Young birds of any color wereto be had almost throughout the year, so that, all things con-sidered, the material availab
Journal of experimental zoology . These six colors will be described in detail, as theyare treated individually. The particular individuals mentionedin this work are among those used in the breeding experimentsof the Department of Experimental Breeding at the Universityof Wisconsin. They are of known parentage and genetic con-stitution and can be identified in other publications of thisdepartment (Cole 12, 14) since the birds are referred to bytheir permanent record numbers. Young birds of any color wereto be had almost throughout the year, so that, all things con-sidered, the material available was almost ideal for an inves-tigation of this sort. The methods used by Strong (02) were found to be gener-ally satisfactory and were essentially follow^ed. Portions ofwhole feathers were cleared in chloroform and mounted in gumdammar. The most instructive preparations for a study ofpigmentation in the adult feather were -made by shearing thebarbules from the barb with a fine scissors, cutting parallel 458 ORREN LLOYD-JONES.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1904
