"Why, sir, by clear explifications of the words in one column, by exemplifying illustrations in the other."
I allow school-books for schools are all too powerful obstruse and hard-like to be understood without exemplifying illustrations."
That clerical gentleman with the wide black hat, who is explaining to the man with him the marvellous mechanism of the new air brake (one of the most conspicuous illustrations of the divine structure of the physical universe), surely you have seen him before.