Author's Add-end-'em.
Reading edition
If you have read my former words, And learned to recognize the Birds, And how to tell them from Flowers, And know these Analogues of ours, You never need be led astray By Darwin, Audubon, or Gray, Whose writings, though considered classic, Savor some-what of the Jurassic. Your work though is but just begun, While mine, I'm glad to say, is done. To you the field I now leave clear, Upset my ink, and disappear!