46 INHERITANCE, FERTILITY, AND SEX IN PIGEONS. 



should have died. Organs other than above noted seemed healthy. Wings, tail, and part of skin 

 preserved; these whitened essentially as in all previous plumages. It was found that just proximal 

 to the bronze edge of most feathers was to be found a very narrow black edge (this of course followed 

 here also by white-to-gray) in many body and wing feathers. 



Autopsy, 433 9 ■ — Died November 27, 1913, on trip Chicago to New York; a nearly "naked" 

 bird; was hardly expected to make trip successfully. Feathers present, mostly stunted and stubby. 

 Two kidneys; no worms found; death apparently from weakness, exposure, and naked condition. 

 Examined more than 24 hours after death. 



Autopsies of Young of Above Pair in Order of Hatching. 



Autopsy, 895 9 • — Died September 18, 1912. Nothing special noted other than the sex. Any 

 change in color from its earlier state would certainly have been noted. 



Autopsy, 885 (f. — Died July 19, 1912. Dead in my absence and bird not fresh when examined. 

 It had maintained its normal color or this would certainly have lieen remarked. 



Autopsy, SSdd'. — Died March 1, 1913. Emaciated; very small 1( >ti s; two kidneys; left ureter 

 distended with whitish semi-fluid (uric acid, etc.); right ureter cmpt} . ( iiKir normal. 



Autopsy, 818. — Disappeared (probably died) at 9 or 10 months. Nu white color had been noted 

 in this bird. Sex unknown. 



Autopsy, 891 9 . — Died April 13, 1913. Ovary rather well developed; two kidneys; worms in 

 greenish intestines; no tuberculosis. 



The 6 old (full-grown) rectrices were normal color, but 6 short, newly growing (?) ones were 

 all plainly grayed or whitened. 4 of the "mutant" feathers were on the right of center and 2 on 

 left. (The 2 center feathers were "mutants.") 



Right wing — Primarii's: 1, normal color, long but worn; 2, normal color for half-length, then 

 stunted and constricted at base, and showed a very narrow edge of white; 3, very small and short, 

 apparently normal color; 4, still smaller, apparently normal color; 5, still smaller and apparently 

 normal color; 6, small (size of 3), apparently normal color; 7, very small (size of 4), nearly pure white; 

 8, very small (size of 4), somewhat whitened; 9, very small and slender, somewhat whitened; 10, 

 too rudimentary to study. 



Secondaries : These normal color, but coverts of first 5 were all young, growing (?), and whitish. 

 All old full-size secondary coverts were of normal color. 



Left wing — Primaries: 1, old, broken off short; 2 to 6 (inclusive) very short (4 to 20 mm.); 

 7, inclosed in follicle, but whitened. 8, 9, 10 very short (10 to 16 mm.), of apparently normal color, 

 except on extreme tip, where there was a very narrow edging of pure white. 



Secondaries: Old long ones all normal color. Coverts nearly all normal; but the fourth, and 

 possibly 1 or 2 more of the young and small ones, were whitened. 



Autopsy, 879 (f. — Died April 2, 1913. Testes exceedingly small, each less than half size of 

 grain of wheat. Two kidneys. Probably digestive troubles; little or not at all emaciated. Except 

 intestines, all organs seemed healthy. Primaries, secondaries, the primary coverts and body coverts 

 normal or nearly normal. Possibly tertials were more gray than usual. Rectrices short and whitish 

 or grayish-white, mixed with ashen-graJ^ 



Autopsy, 880 9 . — Died April 20, 1913. No trace of tuberculosis; intestines greenish, but no 

 worms found; 1 and 3 days previous to death santonine given to expel worms suspected of being 

 present. 



Rectrices: 5 on left side, 6 on right; fourth from center here is short and nearly completely white. 



Primaries: Of both wings all very short; longest = 1 3^ inches. Bases of nearly, but not quite, 

 all were constricted. 



Secondaries: Four of these full length and normal color on left wing; others here small, 2 of 

 them (first and second, or second and third) a bit whitened at tip. On right wing these latter feathers 

 were smaller and very slightly whitened likewise. Here 5 secondaries were normal length and color; 

 others small. 



Tertials : One tertial of left wing was grayed on basal half. 



Autopsy, 861 9 . — Died at noon March 17, 1913. On this morning noted for first time that 

 bird was not well. Slight intestinal (green) trouble, but hardly cause of death; this not revealed 

 by autopsy. Crop and gizzard with food; liver, lungs, and heart apparently normal. Two kidneys; 

 mouth and head normal. Only stubby rectrices and primaries. Rectrices white or very gray; bases 

 of most but not of all these constricted and growth stopped. 



Autopsy, 874 9 •■ — Died April 9, 1913. A female with a fairly well developed ovary. Eggs 

 about 1 mm. diameter; two kidneys. Rather greenish intestines, with worms. The intestine 

 may have been perforated by one oj two large ivorms (IJ inches long). No trace of tuberculosis. 



