My FIRST is an insect, my SECOND a quadruped, and my WHOLE has no real existence.

[Answer]

280.

If the roof of the Tower of London should blow off, what two names in English history would the uppermost rooms cry out?

[Answer]

281.

MY FIRST.

In the glance of the sun, when the wild birds sing,

I start in my beauty to gladden the spring;

I weep at the morning marriage, and smile