. The Penycuik experiments. Somali Zebra i^A. grecyi). pointed arches and the first rounded arch meet in themiddle line, and from their junction the long hairs growout which form what I have spoken of as the frontal tuft. I have described thus fully the stripes on the front ofthe face of Matopo that a comparison may be afterwardsmade between his acutely pointed frontal arches and thenumerous rounded arches in the hybrid offspring, Eomulus TELEGONY AND REVERSION. 79 (Fig. 20). To admit of further comparison witli the liybridsit is necessary that I should also describe at some lengththe stripes
. The Penycuik experiments. Somali Zebra i^A. grecyi). pointed arches and the first rounded arch meet in themiddle line, and from their junction the long hairs growout which form what I have spoken of as the frontal tuft. I have described thus fully the stripes on the front ofthe face of Matopo that a comparison may be afterwardsmade between his acutely pointed frontal arches and thenumerous rounded arches in the hybrid offspring, Eomulus TELEGONY AND REVERSION. 79 (Fig. 20). To admit of further comparison witli the liybridsit is necessary that I should also describe at some lengththe stripes on the body of Matopo. Not only are no twoindividuals of any given species or vaiiety of zebras alikein their marking, but in no single individual is the patternthe same on both sides.* But notwithstnnding the varia-FiG. Skin, Somali Zebra,tion in individual zebras, and the extreuie cases of varia-tion within the same species, it is possible to recognise * As far as I cau learn, want of symmetry in the coloration of plantsand animals is comparatively common. On tlie other hand, in plants andprobably also in animals, a point is eventually reached in the difCerence ofthe two sides which is prejudicial to the life of the variety or not this the case, wild animals would doubtless be as asymmetricalin their coloration as our artiflcially protected domestic animals. Whileiniercrossinr^ makes for asymmetry, inbreedinj^ seems to lead to symmetryin the markings. Mr. Pnizak tells me the Craddock, an inbred race ofmountain zebras, are remarkably symmetrical in their markings.
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Keywords: ., bookcentury1800, bookdecade1890, bookidpenycui, booksubjecthorses
