Ornamentation is usually of randomly oriented tubercles and striae, although striae are more common in the posterior third and may be longitudinal, whereas tubercles occur mainly on the anterior section.
Typically there are some tubercles in the anterior quarter or third of the total length; these pass into longitudinally oriented striae in the posterior section.
On the posterior margins of several operculars the striae break up into tubercles.
Were the striated rock surface perfectly plane, and were the striae even lines, they would only tell that the ice was moving in one of two directions.
For the exact determination of the direction of ice movement, recourse must be had to the striae on the bed-rock.
But the rock surface is not usually perfectly plane, nor the striae even lines, and between the two directions which lines alone might suggest, it is usually possible to decide.
With a good compass, the direction of the striae may be measured to within a fraction of a degree, and thus the direction of ice movement in a particular place be definitely determined.
The striae which have been determined about Baraboo are shown on Plate II.
No striae were visible on the elevated crest with which the animal swims, but this crest was furnished or fringed with a thin moveable flap, 0.
They were marked across the back with alternate striae of silver, and various shades of brown and black, though there were scarce two marked exactly alike.
Glacial deposits occupy much of the low ground; the ice, having travelled in a southerly or south-easterly direction, has left abundant striae on the higher ground to indicate its course.
External surface of the shaft, showing the transverse striae and jagged boundary, caused by the imbrications of the scaly cortex.
Madeira, as also somewhat darker on its head and prothoracic disk (and with its elytral striae less deeply impressed), than it is in Algeria and Spain.
Whorls probably about 10, flat or even a little concave at the sides, shouldered above, usually with a spiral shallow groove and a few striae near the shoulder, and marked with fine incremental striae.
Volutions 6, rather slowly enlarging, a little convex, sculptured with fine obliquestriae of growth, not glossy.
When bars or ribs, or large striae are crossed by others radiating from the umbones, shells are said to be cancellated, as represented in cut, fig.
The concentric striae or lines formed by the edges of the successive layers of shelly matter deposited by the animal by which it increases the shell.
Shell generally marked by elevated pustules; aperture narrow and linear; the extremities more or less produced; the teeth continued beyond, and frequently forming elevated striae across the lips.
It should be exempt from striae or veins as well as air-bubbles, and have not the slightest degree of milkiness.
The striae seem as if the rock had been partially molten: at times the strike is north and south, at others east and west; when we come to what may have been its surface, it is as if the striae had been stirred with a rod while soft.
The gneiss is often striated, all the striae looking one way--sometimes north and south, and at other times east and west.
I could not perceive any transverse striae on these muscles.
I could perceive only feeble transverse striae on some of these muscles, and on others there was not the least trace of striae.
Hence we see that there is no relation between the striae on the parietes and on the scuta.
These striaeoften affect the internal surface of the basal margin, making it bluntly toothed.
Lamarck does not even notice such conspicuous external characters as the longitudinal striae on the scuta, and the smooth rounded edges of the radii, it is impossible to identify his species.
As the striae often run in pairs, the little teeth frequently stand in pairs, or broader teeth have a little notch on their summits, bearing a minute tuft of spines.
In the central part the transverse striae on the muscular fibres were quite distinct; and it was * 'Leons phys.
They disappeared by the striae being replaced by transverse lines formed of excessively minute dark points, which towards the exterior could be seen only under a very high power; and ultimately these points were lost.
These sculptures often present the aspect of striae across the face of the valve, and the best lenses have shown them to consist of a series of small cavities within the siliceous wall of the cell.
When duly magnified, the objects which produce the striae turn out to be piles of minute liquid flowers, whose planes are at right angles to the direction of the striae.
Looked at through a strong lens, this cloudiness appears as striae at right angles to the planes of freezing, and when the direction of vision is across these planes the ends of the striae are apparent.
The spaces between the striaeare composed of clear unclouded ice.
Well, thestriae in this side are not apparent in this photograph.
Yes; the bolt face, and it is just as distinctive as these striae on my photographs of the breech-face marks of the revolver.
While such minute and gradual variations are harmless for most optical purposes, sudden variations which generally take the form of striae or veins are fatal defects in all optical glass.
Plate glass is, nevertheless, considerably used for the cheaper forms of lenses, where the scattering of the light and loss of definition arising from these fine striae is not readily recognized.
Under a high magnifying power the individual fibres composing these bundles were seen to consist of jointed segments marked with dots and transverse striae as a diatom.
These striae are probably contractile muscular fibrillae; or "myophanes," by whose contraction the openings are voluntarily widened.
The number of these striae appears to correspond with that of the vertical rods in the porochora, and each of these latter stands apparently in direct communication with the basal end of an apical stria (s 59).
In the upper space parallel striae may be observed.
The striae gradually grow towards the centre of the nucleus and there meet.
Appearance of radialstriae round the male pronucleus, which gradually travels towards the female pronucleus.
The striae of which it is composed are continuous from one end of the spindle to the other and are thickened at the centre.
The striaeof the polar stars are very fine but distinct.
They commence to be formed at the two poles, and are then (in Heteropods) in immediate contiguity with the striae of the stars.
More important is the fact that the striae in the case of the ovum do not appear, at any rate have not been shewn, to form themselves again into a nuclear network.
Mother-of-pearl is simply the inner lining of the shell, which is composed of numerous thin layers of carbonate of lime so arranged that the edges of the successive layers produce many fine striae very close together.
The beautiful iridescence of this inner shell-lining is caused by the complicated diffraction and reflection (interference effects) of the light by the fine striae and the translucent superposed thin plates of shell material.
The effect was best noted when the striated discharge occurred in the tube, but was also produced when the striae were not visible, showing that, even then, the gas in the tube was not of uniform density.
The position of the striaewas generally such, that the rarefactions corresponded to the places of incandescence or greater brightness on the wire w.
B for instance, and an exhausted tube be introduced from the other side in the hollow space, the tube is lighted most intensely because of the increased condenser action, and in this position the striae are most sharply defined.
This experiment throws an interesting light upon the nature of the striaeand may lead to important revelations.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "striae" in a variety of sentences. We hope that you will now be able to make sentences using this word.
