Analysis of The Fourth Epigram

Now liquid Streams by the fierce Cold do grow
As solid as the Rocks from whence they flow;
Now Tibers Banks with Ice united meet,
And it's firm Stream may well be term'd its Street;
Now Vot'ries 'fore the Shrines like Statues show,
And scarce the Men from Images we know;
Now Winters Palsey seizes ev'ry Age,
And none's so warm, but feels the Seasons Rage;
Even the bright Lillies and triumphant Red
Which o're Corinna's youthful cheeks are spred,
Look pale and bleak, and shew a purple hew,
And Violets staine, where Roses lately grew.

Galla alone, with wonder we behold,
Maintain her Spring, and still out-brave the Cold;
Her constant white does not to Frost give place,
Nor fresh Vermillion fade upon her face:
Sure Divine beauty in this Dame does shine?
Not Humane, one reply'd, yet not Divine.