Dickens gives a sense that the prisoner feels time is short and fleeting. One way dickens does this is through the use of minor sentences for example "Seven hours left!". This sentence helps the reader to imagine the prisoners feelings and their sense of time, as the sentence is near to the end of the text giving the feeling that most of his time is already gone also the sentence has an exclamation mark implying that the prisoner is very worried about the whole situation. The sentence itself is very short like the prisoners time and its straight to the point with no unnecessary words making sure that the readers attention is completely focused on the amount of time the sentence is showing.