“The Coroner: What did you understand by that?

“Witness: It conveyed no meaning to me. I thought that he was delirious.

“The Coroner: What was the point upon which you and your father had this final quarrel?

“Witness: I should prefer not to answer.

“The Coroner: I am afraid that I must press it.

“Witness: It is really impossible for me to tell you. I can assure you that it has nothing to do with the sad tragedy which followed.