How does this apply to Sherlock Holmes public hisses at me but I cheer myself when in my own house contemplate the coins

The quote "Sherlock Holmes public hisses at me but I cheer myself when in my own house contemplate the coins" is a reference to the story "The Adventure of the Speckled Band" by Sir Arthur Conan Doyle. In the story, Holmes and Dr. Watson are investigating the death of Julia Stoner, who has been found dead in her locked room with no signs of forced entry. Holmes discovers that Julia's stepfather, Dr. Grimesby Roylott, is a violent man who has been mistreating her. Holmes also learns that Roylott keeps a poisonous snake in his collection of exotic animals, and he suspects that Roylott used the snake to kill Julia.

The quote is a reference to the fact that Holmes is publicly criticizing Roylott for his treatment of Julia, but Roylott is still able to maintain a respectable façade in public. However, when Holmes is alone in his own house, he is able to relax and contemplate the evidence that he has gathered, which leads him to the conclusion that Roylott is the murderer.