NEBULA TO MAN 
But though of shapely build, well armed and brained, 325 
They have, as it would seem, their zenith gained : 
Or may indeed have long since passed their prime, 
For of them naught we know in by-gone time. 
Nor distant now would seem to be their doom, 
For little of them in the times to come 330 
Shall we behold. Yet here they meet our eyes 
As they had had adaptabilities 
Subtle and great. But all adaptive powers 
Must have their limits in this world of ours. 
And these "Protoceras" forms must yield their place 335 
To other life, as did the " Titan " race. 
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