Is there a Summary of the poem Manlet by Lewis Carroll 1832-1898?

There is no known poem called "Manlet" by Lewis Carroll. It's likely you're misremembering the title or author.

Carroll, known for his whimsical and often nonsensical works, did write numerous poems, including those featured in "Alice's Adventures in Wonderland" and "Through the Looking-Glass." If you can recall any details about the poem's content or any specific lines, I might be able to help you identify it.