Book Excerpt: ed several skins, thrived and grew active. Its size increased steadily. And other things began to grow in that cage. Odd, hard-shelled, bluish-green weeds; lichenous patches, dry as dust; invisible, un-Earthly bacteria--all were harmless, possibly even beneficial, to my charge.How did all this stuff come into being? Miller and Craig had examined the dried clay of the E.T.L.'s discarded casing with microscopes. They scraped dust from...