ADJECTIVES AND ADVERBS.
Adjectives are often erroneously used for adverbs in sentences like the following: "This is an uncommon good portrait," "It is a miserable poor painting. "Uncommonly good and miserably poor are right.
Adverbs are still more commonly used for adjectives. "Mary looked beautifully at the party," and "Janauschek looked majestically on the stage," are incorrect, for it is intended to describe the appearance of Mary and Janauschek, not their manner of looking; therefore the adjectives beautiful and majestic should be used.
When two objects are compared, the comparative degree should be used. "William is the heaviest of the two," and "Which is the most desirable—health or wealth?" ought to be, "William is the heavier of the two," and "Which is the more desirable—health or wealth?"