If by my whole at any time you pass, you
Tread on the dust of holy saints and martyrs,
Holy the place, may holy thoughts attend you,
Peacefully dreaming!

is solved by Catacomb.

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309

Offspring of nature and of art, I stand
Chief ’midst the monuments of every land;
I may not lengthen life, but I
For centuries forbid to die.
The greatest truth in me you meet
Is but deception most complete.
Unchanged I last the changing crowds among,
And as I older grow, I grow too young.

is solved by A portrait.

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310

Pronounced as one letter, and written with three,
Two letters there are, and two only in me;
I’m double, I’m single, I’m black, blue, and gray,
I’m read from both ends, and the same either way.

is solved by Eye.