three o'clock Sunday morning
`` But it will cost you a smoke . '' `` I have n't any cigars , but you can buy yourself some , '' answered Dave , and passed over a quarter of a dollar , which the train hand pocketed with satisfaction . Soon the train was under way , and in less than half an hour they reached the siding at Oakdale , and there Dave jumped off . By his watch the lad saw that it was three o'clock Sunday morning . Without delay he struck off on foot for the school . As he hurried on he wondered what he had best do on arriving at Oak Hall . Should he rouse up Doctor Clay and tell the master the whole story , or would it be better to say nothing and await developments ?