Every step can be followed within the strategy of confluence and modification; and the black ring which surrounds the ball of the ocellus is unquestionably formed by the union and modification of the three black marks, b, c, d, of the elliptic ornament. The egg can then absorb the sperm and fertilization can then start. The researchers then quantified play high quality of the youngsters with every toy primarily based on factors such as studying, problem fixing, curiosity, creativity, imagination, and peer interplay. Sagr.What’s going to it do then? If one of the balls be examined, it will be seen that the decrease part is of a brown tint and is indistinctly separated by a curved oblique line from the upper part, which is yellower and more leaden; this curved oblique line runs at right angles to the longer axis of the white patch of gentle, and certainly of all the shading; however this distinction in colour, which cannot after all be shewn in the woodcut, doesn’t in the least interfere with the right shading of the ball. Additionally it is narrowly edged on the decrease facet with a fulvous tint. Thus nearly every minute detail within the form and colouring of the ball-and-socket ocelli might be shewn to comply with from gradual adjustments in the elliptic ornaments; and the event of the latter may be traced by equally small steps from the union of two almost simple spots, the lower one (fig. 58) having some dull fulvous shading on its higher side.
It differs also from the opposite spots by being bordered on its upper facet with some dull fulvous shading. The ring is always much thickened, with the edges sick-outlined in the direction of the left-hand higher nook, the feather being held erect, in the place through which it’s right here drawn. These ornaments placed parallel to the shaft, manifestly correspond in position with the ball-and-socket ocelli. The larger basal spots occupy precisely the same relative place on these feathers, as do the perfect ocelli on the longer wing-feathers. The central tail-feathers of P. napoleonis have the 2 ocelli on every aspect of the shaft perfectly developed; however the internal ocellus turns into less and fewer conspicuous on the more exterior tail-feathers, until a mere shadow or rudiment is left on the internal aspect of the outermost feather. But happily the several feathers on the wing suffice to provide us a clue to the problem, they usually prove to demonstration that a gradation is at least doable from a mere spot to a completed ball-and-socket ocellus. Again, in P. malaccense, the ocelli on the tail-coverts are, as we have seen, confluent; and these feathers are of unusual size, being two-thirds of the length of the tail-feathers, so that in both these respects they approach the tail-coverts of the peacock.
So as to find how the ocelli have been developed, we can’t look to a long line of progenitors, nor to many intently-allied types, for such do not now exist. These little breaks have an important which means. A spot generally breaks up into smaller spots, which still stand of their correct locations. The brown, orange, and pale leaden slender zones, which border the decrease black mark of the elliptic ornament, will be seen gradually to grow to be increasingly softened and shaded into one another, with the upper lighter part in the direction of the left-hand corner rendered nonetheless lighter, in order to turn out to be almost white, and at the identical time extra contracted. Thus in fig. 57 stripe A runs to ocellus a; B runs to ocellus b; stripe C is broken in the upper part, and runs all the way down to the next succeeding ocellus, Fig. 58. Basal part of the secondary-wing feather, nearest to the physique. The indentation of the central disc and of the encompassing zones of the ocellus, in each species of peacock, speaks plainly in favour of this view, and is otherwise inexplicable.
Between one of many elliptic ornaments and a perfect ball-and-socket ocellus, the gradation is so excellent that it is scarcely attainable to determine when the latter term ought to be used. If we image to ourselves a progenitor of the peacock in an nearly precisely intermediate situation between the existing peacock, with his enormously elongated tail-coverts, ornamented with single ocelli, and an atypical gallinaceous hen with short tail-coverts, merely spotted with some color, we shall see a chicken allied to Polyplectron-that’s, with tail-coverts, able to erection and enlargement, ornamented with two partially confluent ocelli, and lengthy sufficient nearly to conceal the tail-feathers, the latter having already partially lost their ocelli. In this respect they differ remarkably from the tail-feathers of Polyplectron, which in most of the species are ornamented with larger ocelli than those on the tail-coverts. The mark (b) corresponds in every respect with the basal shaded spot of the simple feather described within the final paragraph (fig. 58), however is more highly developed and more brightly colored. Above and to the best of this spot (b fig. 59), with its bright shading, there’s an extended slim, black mark (c), belonging to the identical row, and which is arched slightly downwards in order to face (b).
