My observations on the sun are usually made twice a day during my meal hours, or in the early morning or late at evening in summer, while the sun is visible.

Yes, you are right; I try and make the best use of my time.

It is much too short for all that I propose to do.

My evenings are my own.

When the heavens are clear, I watch them; when obscured, there are my books and letters.
"Dr.Alexander Brown, of Arbroath, is one of my correspondents.