Pernobilis et pervetusta familia :An illustrious and old family tradition.
Stephen into a ditch: Wells pushed Stephen into a ditch full of cold water because he refused to exchange his snuff box for Well’s seasoned lacking chestnut. It was a common game to break chestnut by striking one against the another. The seasoned hacking chestnut is one which has remained unbroken in spite of its breaking many other.
The result is that Stephen fells sick.