Re: Book ID: Old SciFi, Children in old Volcanic Caves in/on Moon with Live Ecosystem

Ah, "Space Cat." 

Yes, that's what I thought of when I read the initial inquiry.  The cat 
is named Flyball (!) and I still remember how the book ends.  Pretty 
sappy and stupid but I found it quite moving at the time.

   "The moon is just a start," says Flyball the flier;
   "We'll reach the stars yet, going higher and higher.
   We'll voyage right 'round space to the ends of the sky;
   Oh, noone can ever guess how far we will fly."

It seems to me IIRC that quite a bit of the story is told from Flyball's 
point of view.

I think I also remember that he wrote a number of nonfiction science 
books for children.  Abebooks, click, click... oh, my goodness, either 
he was quite the polymath or there's more than one person by that name.

-- 
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