Yet reason tells me, that if numerous gradations from a perfect and complex eye to one very imperfect and simple, each grade being useful to its possessor, can be shown to exist; if further, the eye does vary ever so slightly, and the variations be inherited, which is certainly the case; and if any variation or modification in the organ be ever useful to an animal under changing conditions of life, then the difficulty of believing that a perfect and complex eye could be formed by natural selection, though insuperable by our imagination, can hardly be considered real.
In looking for the gradations by which an organ in any species has been perfected, we ought to look exclusively to its lineal ancestors; but this is scarcely ever possible, and we are forced in each case to look to species of the same group, that is to the collateral descendants from the same original parent-form, in order to see what gradations are possible, and for the chance of some gradations having been transmitted from the earlier stages of descent, in an unaltered or little altered condition.
In the Articulata we can commence a series with an optic nerve merely coated with pigment, and without any other mechanism; and from this low stage, numerous gradations of structure, branching off in two fundamentally different lines, can be shown to exist, until we reach a moderately high stage of perfection.
Look at the family of squirrels; here we have the finest gradation from animals with their tails only slightly flattened, and from others, as Sir J.
And to the eyes of the travelers there reappeared that original aspect of the lunar landscapes, raw in tone, without gradation
of colors, and without degrees of shadow, roughly black and white, from the want of diffusion of light.
Surely I have now got down to the lowest gradation
in Arthur's affection, and discovered all the evils of his nature: if there be any further change, it must be for the better, as we become still more accustomed to each other; surely we shall find no lower depth than this.
Josephson said the city would have to be sensitive to gradations
of violations, noting the unfairness of a ``blackballing system'' in which everyone remotely connected to a scandal is forever professionally disabled.
Flex Clear Drive technology achieves high density, smooth color gradation
expression by automatically analyzing the characteristics of the image and adjusting the distribution of color gradations
to optimize picture quality.
of color within the wool pile give the pieces an illusion of flow not captured with flat colors.
On the cardboard's surface Dole-Recio has painted circles, sometimes rounds within squares, in various shaded gradations
and then covered them with various cloudy stripes-frost, periwinkle, slate-leaving only the ghostliest residue of the circles.
This plug-in is an export module that bypasses the operating-system-dependent print driver - allowing processing of 16-bit RGB images, which dramatically increasing gradations
and as a result, overall image quality.
An exclusive Barbara Barry line of hand-knotted carpeting called Gradations
will make its debut in International Design Guild showrooms in January.
In our elaborate American justice system, we have many gradations
The 24-bit color gradations
of the P-440 produce a palette of approximately 16.
With its 600 x 600 dpi resolution and 256 gradations
per color per pixel, easy color calibration, selectable glossy mode, and Konica's new Simitri(TM) Color Polymerized Toner, the ColorFORCE 8050 delivers the high-quality, accurate color necessary to meet the demands of the production print professional.