Parallel Structure In E. B. White's Once More To The Lake

This line from E.B. White’s Once More to the Lake, is structured as a declarative, compound-complex sentence. It is compound because it contains two separate clauses which are joined together by a semicolon. It is complex because the main clauses contain a combination of an independent clause and a dependent clause. In the first portion of the sentence, the dependent clause is “In the daytime, in the hot morning…” and the independent clause is “these motors made a petulant, irritable sound.” In the second portion of the sentence, the dependent clause is “...in the steel evening when the afterglow hit the water...” and the independent clause is “...they whined about one’s ears like mosquitoes...” The parallel structure in the sentence works