The excerpt suggests that johnson’s work is significant because it
.teaches readers how to understand analogies.

.follows a method prescribed by other dictionaries.

.reflects an exhaustive study of its words.

.includes obscure words not previously defined.
i applied myself to the perusal of our writers; and noting whatever might be of use to ascertain or illustrate any word or phrase, accumulated in time the materials of a dictionary, which, by degrees, i reduced to method, establishing to myself, in the progress of the work, such rules as experience and analogy suggested to me; experience, which practice and observation were continually increasing; and analogy, which, though in some words obscure, was evident in others.