The column marked p gives the page in the volume of questions;
the column n gives the number of the question in that page, and
the column N refers to its solution, the first number indicating
the volume, the second the number in that volume of the solu-
tion. When the question is "book-work," or to be found in
any Author of established reputation at the University, the
column N refers to that Author by the following abbreviations: