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?"