If a second edition of your Specimens should be called for, you might add from Helen Maria Williams the Sonnet to the Moon, and that to Twilight; and a few more from Charlotte Smith, particularly
I love thee, mournful, sober-suited night.
At the close of a sonnet of Miss Seward's are two fine verse:
Come, that I may not hear the winds of night,
Nor count the heavy eave-drops as they fall.
You have well characterized the poetic powers of this Lady — but after all, her verses please me with all their faults better than those of Mrs. Barbauld, who, with much higher powers of mind, was spoiled as a poetess by being a dissenter, and concerned with a dissenting academy.