Jos's motives and artifices were not very difficult of comprehension, and Dobbin laughed in his sleeve, like a hypocrite as he was, when he found, by the knowing air of the civilian and the offhand manner in which the latter talked about Tapeworm Castle and the other members of the family, that Jos had been up already in the morning, consulting his travelling Peerage. 
Dobbin laughed when he heard Jos talk about Tapeworm Castle, and learned that he had already been consulting his Peerage. 