You will see thhat it is Schedule 138. The census schedules were distributed the week before census night, and each schedule was numbered. The enumerator had a "Memorandum Book" in which he noted the address at which schedule was left. When he collected the schedules on the Monday, enumeration day, he would go to each address. At that address he would be told by a neighbour that the occupier had died, and the schedule had not been filled in. As he had to account for each schedule he had noted in his return that the occupier had died.
Stan