6. TWOFOLD SHOUT. Twofold, because consisting of a double note. Compare
Wordsworth's sonnet, _To the Cuckoo_, l. 4:
"With its twin notes inseparably paired."
Wordsworth employs the word "shout" in several of his Cuckoo
descriptions. See _The Excursion_, ii. l. 346-348 and vii. l. 408; also
the following from _Yes! it was the Mountain Echo_:
Yes! it was the mountain echo,
Solitary, clear, profound,
Answering to the shouting Cuckoo;
Giving to her sound for sound.