Past Windmill lane
Walking east on Sir John Rogerson's Quay, with the river on his left, Bloom passes four landmarks: a street called "Windmill Lane," then a building housing "Leask's the linseed crusher," then "the postal telegraph office," and finally "the sailors' home." The third holds some interest for him: "Could have given that address too."
Gifford identifies the business, "H. M. Leask & Co., linseed crushers, oil and linseed cake manufacturers, 14-15 Rogerson's Quay." The business is long gone, but the building remains. Gareth Collins notes that it is "pretty much the only original building remaining on Sir John Rogerson's Quay." 19 Rogerson's Quay, Gifford notes, held the sailors' home "And Shipwrecked Mariners' Society."
Between them, Gifford observes, was the "Town Sub-Post Office, Savings Bank, and Money Order Office at 18 Rogerson's Quay. Bloom reflects that he could have used this post office as a blind in addition to the one in Westland Row toward which he is circling." Unlike his wife, he is quite surreptitious about his adulterous correspondence.