It was at a much later period of my youth, when practising elocution by myself, or with companions of my own age, that I for the first time understood the object of his rules, and saw the psychological grounds of them.

At that time I and others followed out the subject into its ramifications, and could have composed a very useful treatise, grounded on my father's principles.

He himself left those principles and rules unwritten.

I regret that when my mind was full of the subject, from systematic practice, I did not put them, and our improvements of them, into a formal shape.
A book which contributed largely to my education, in the best sense of the term, was my father's _History of India_.

It was published in the beginning of 1818.