The Adventure of the Field Theorems
Holmes laughed like a Bedlam escapee.
Considerably startled by his outburst, I lowered my Times, where I had been engrossed in an article about a new geometrical pattern discovered in the fields of Surrey. I had not yet decided whether to bring it to Holmes’s attention.
“What amuses you so, Holmes?”
No interesting case had challenged Holmes of late, and I wondered, fearfully, if boredom had led him to take up, once again, the habit of cocaine.
Holmes’ laughter died, and an expression of thoughtful distress replaced the levity. His eyes revealed none of the languorous excitement of the drug.