From Wikipedia:

A Crystal Age is a utopian novel written by W. H. Hudson, first published in 1887. The book has been called a "significant S-F milestone" and has been noted for its anticipation of the "modern ecological mysticism" that would evolve a century later.

Published
1887
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Author

W. H. Hudson

William Henry Hudson (1841–1922) was an author, naturalist, and ornithologist.