Holmes is very well aware of that; however, he knows Watson will keep up behind him easily enough.
His own hat has mysteriously disappeared already (it may be difficult or even impossible for him to find, later, given the number of drinks he will likely have consumed by that juncture).
no subject
His own hat has mysteriously disappeared already (it may be difficult or even impossible for him to find, later, given the number of drinks he will likely have consumed by that juncture).