I never knew whether this picture belonged in Chapter 5, Journal Keeping, or in Chapter 7, Rainy Nights, where I cast about desperately for astronomical entertainment under soggy skies. Nevermind... it didn't run in either chapter, so I'll run it here.

In the foreground is Meriwether Lewis's journal entry for a frosty January night in 1805 -- the Captains were staying up at Fort Mandan in order to time a lunar eclipse, the better to fix the longitude of their winter encampment. In the background is the screen of a computer running "SkyGlobe" to reproduce that morning's skies as seen from central North Dakota. (The book is one of the magnificent volumes of Gary Moulton's new edition of the Journals of the Lewis and Clark Expedition, available from the University of Nebraska Press.)

Keeping your own journal is the real theme of Chapter 5, so such obtuse connections are not as comfortable there as one might wish.