IV

and was inwardly congratulating myself upon this new method of reckoning distance, when the wheels gave a lurch and we passed over a car track. Instantly all my fine calculations fell to the ground. We were not in Madison Avenue, as I supposed; could not be, since no track crosses that avenue below Fifty-ninth Street, and we were proceeding on as we could not have done had we gained the terminus of the avenue at Twenty-third Street. Could it be that the carriage had not been turned around while I was in the house, and that we had come back by way of Fifth Avenue? I could not remember⁠—in fact, the more I tried to think which way the horses’ heads were directed when we went into the house, the more I was confused. But presently I considered that wherever we were, we certainly had not passed over the narrow strip of smooth pavement in front of the Worth monument, and therefore could not have reached Twenty-third Street by way of Fifth Avenue. We must be up town, and that track we crossed must have been at Fifty-ninth Street. And soon, as if to assure me of this, we took a turn, quickly followed at a