My friend threw out the information in a very offhand way, but I saw that he cocked his eye at me to see if I had followed his reasoning.

“You think a man must be well-to-do if he smokes a seven-shilling pipe,” said I.

“This is Grosvenor mixture at eightpence an ounce,” Holmes answered, knocking a little out on his palm. “As he might get an excellent smoke for half the price, he has no need to practise economy.”

“And the other points?”