Answer:
I honestly have no clue either but I'mma try and "think outside of the box" here so stay with me XD
Explanation:
I mean during thunderstorms there's lightning right? And trees are like the most susceptible thing to lightning strikes because theyre fairly big and tall right? Maybe the trees appearing bright could signify lightning and with lightning comes thunder? I honestly don't know. Or maybe it's relating to some sort of mythology? Like the "heavens" opening up and shining light on the trees to signify rain because a god or something controls the weather? Or maybeee, this might be the best one yet, rain helps plants grow, trees=plants, illuminating of a plant=growth, GROWTH FROM RAIN. Ok I'm done... I hope at least a little of this made sense and maybe helped lol.
Samuel Langhorne Clemens (Mark Twain) uses a fine humor style which is easily detected in extracts like:
<em>"Thish-yer Smiley had a mare; the boys called the fifteen minute nag(...) for all she was so slow and always had the asthma, or the distemper or the consumption, or something of that kind."</em>
<em>"...And he had a little small bull pup, that to look at him you´d think he warn´t worth a cent(...) his underjaw´d begin to stick out like the fo´castle of a steamboat..."</em>
<em>"...He ketched a frog one day, and took him home, and said he cal´klated to edercate him(...) and you bet you he did learn him, too.</em>
Twain is satirizing several aspects of American life, but specially the country "punks" who tend to speak at length about subjects that are close to them but are really unimportant an nonsensical.
I believe it's the second one hope this helps
