Give me the railway guide, and I'll tell you when he will be here tomorrow.

You may trust me, Catherine, to make no mistakes.

Mr.
Presty's wonderful knowledge of figures has been of the greatest use to me in later life.

Thanks to his instructions, I am the only person in the house who can grapple with the intricacies of our railway system.
Your poor father, Mr.Norman, could never understand time-tables and never attempted to conceal his deficiencies.

He had none of the vanity (harmless vanity, perhaps) which led poor Mr.Presty to express positive opinions on matters of which he knew nothing, such as pictures and music.