Crown fires, they burn the top of the trees to prevent quick spreading of fires
Answer:
<em>'He could feel the hound, like autumn, come cold and dry and swift</em>
Explanation:
Bradbury uses the simile of the <em>hound like autumn</em> in order to provoke sensations that are similar to the feelings we experience when Autumn is near and Summer is over.
The coldness and the swift character of the (mechanical) hound expresses the emotionless hunting of the machine in the shape of a hound.