Illustration by Pictures. One of the great contrasts between the School Books used by the fathers and mothers of the land, when young, and those now'used by the children, is the use of pictures. As a curious instance of illustrating the meaning of words by pictures, look at the three 'pictures of a Ship on page 1751 of Webster's Unabridged Un-abridged Dictionary, these alone illustrate il-lustrate the meaning of more than one hundred words and terms far better than they can be defined by any description des-cription in words,.