This work contains the lines, "The swallow tittering from the straw-built bed, the cock's shrill clarion, or the echoing horn, no more shall rouse them from their lowly bed" before claiming that "Full many a gem of purest ray serene the dark unfathom'd caves of ocean bear".  
This work contains the lines, "The swallow tittering from the straw-built bed, the cock's shrill clarion, or the echoing horn, no more shall rouse them from their lowly bed" before claiming that "Full many a gem of purest ray serene the dark unfathom'd caves of ocean bear".  Another section of this work discusses how "Knowledge to their eyes her ample page, rich with the spoils of time, did ne'er unroll" and "beneath those rugged elms, that yew tree's shade, where heaves the turf in many a mouldering heap, each in his narrow cell for ever laid".  This work begins with the lines, "The curfew tolls the knell of parting day, the lowing herd winds slowly o'er the lea".  For 10 points—name this poem by Thomas Gray.
This work contains the lines, "The swallow tittering from the straw-built bed, the cock's shrill clarion, or the echoing horn, no more shall rouse them from their lowly bed" before claiming that "Full many a gem of purest ray serene the dark unfathom'd caves of ocean bear".  
“{Elegy Written} in a {Country Churchyard}”