What's the difference between "at length" and "at some length"?

The conventions of a number of the states, having at the time of their adopting the constitution, expressed a desire, in order to prevent misconstruction or abuse of its powers, that further declaratory and restrictive clauses should be added: and as extending the ground of public confidence in the government, will best ensure the beneficent ends of its institution. what is meant by the phrase "further declaratory and restrictive clauses"?

What is the central theme of the sniper

You seal resign myself to you also i guess what you mean, i behold from the beach your crooked inviting fingers, i believe you refuse to go back without feeling of me, we must have a turn together, i undress, hurry me out of sight of the land, cushion me soft, rock me in billowy drowse, dash me with amorous wet, i can repay you. in this excerpt from "song of myself," which literary device does whitman use to address the sea? alliteration allusion apostrophe onomatopoeia