“even as in autumn leaves detach themselves,
now one and now another, till their branch
sees all its stripped off clothing on the ground;
so, one by one, the evil seed of adam
cast themselves down that river-bank at signals,
as doth a bird to its recalling lure.”

identify the metaphor in the excerpt and explain its meaning. how does the metaphor affect the meaning and tone of the excerpt?

I feel like there is more than one metaphor? They paint a picture of what the author wants you to see. It sets the tone by making you feel what the author is showing you. ie: as doth a bird to its recalling lure. I think it makes you feel and sets the tone by its imagery.

either a donut or a sphere or a pancake or a flat sphere. it depends on where the vertical line is.

if the line goes through the center of the circle and is perpendicular to a diameter containing the center, then you get a flat circle.

if the line and the diameter of a the circle meet in the center of the diameter and at an angle, you get a pancake.

if the line is on the circumference of the circle and is at right angles   to the circle you get a ring.

if the line contains the diameter, you get a sphere.

the the line is parallel to the diameter and touches the circumference, you get a donut.

the use of “as” in the example to draw the resemblance. some more examples of common similes are given below. common examples of simile. our soldiers are as brave as lions. her cheeks are red like a rose. he is as funny as a monkey. the water well was as dry as a bone. he is as cunning as a fox. simile introduces vividness into what we say.