CHAPTER XI.

Vegetable problems. Approach to Leyden: general description of that town: the town-hall: celebrated picture of Lucas Van Leyden; anecdote of that painter: also of Karel de Moor: picture of the siege of Leyden: description of that horrible siege: generous and heroic conduct of the Dutch women: also of Peter Adrian: the mount: university of Leyden: the students: anecdotes of Boerhaave: Peter the Great: genius and diffidence: confidence in Providence: monument of Boerhaave 116