Square quartet

Usage examples of angles.

On the previous day the chief line of movement was nearly at right angles to that shown in the present figure, and it was more simple.

There must, therefore, have been movement in at least two planes at right angles to one another.

The movement at right angles to the above lines was due to the arched hypocotyl becoming more arched as it increased in height.

On the following day they were still more open, and the nocturnal rise was greater, but the angles were not measured.

The ellipse described on the 29th had its longer axis directed at nearly right angles to a line joining the two cotyledons.

But there was also movement in a vertical plane at right angles to the inclined glassplates.

It is also always developed with the flat lower side, which, as just stated, forms a part of the radicle, at right angles to it, and in a horizontal plane.

The direction of the longer axes of the ellipses made during the same day or on successive days generally changed completely, so as to stand at right angles to one another.

Thin slips of wood were cemented on more or less steeply inclined glassplates, at right angles to the radicles which were gliding down them.

In one case of a radicle, which was growing rather slowly, the rootcap, after encountering a rough slip of wood at right angles, was at first slightly flattened transversely: after an interval of 2 h.

When, as in the above cases, radicles encountered an obstacle at right angles to their course, the terminal growing part became curved for a length of between .

After 3 additional hours terminal portion deflected at right angles from the perpendicular.

We may therefore conclude that the initial power of an irritant on the apex of the radicle of the bean, is less than that of geotropism when acting at right angles, but greater than that of geotropism when acting obliquely on it.

With the pea, therefore, the irritation from an attached object, and from geotropism when acting at right angles to the radicle, are nearly balanced forces.

We infer that this was the case, because two leaves on plants growing out of doors, had their angles above the horizon measured in the middle of the day and at 9 to about 10 P.