Van Baerle, from whose thoughts the three bulbs were never absent, made a snare for catching the pigeons, baiting the birds with all the resources of his kitchen, such as it was for eight slivers (sixpence English) a day; and, after a month of unsuccessful attempts, he at last caught a female bird.
It cost him two more months to catch a male bird; he then shut them up together, and having about the beginning of the year 1673 obtained some eggs from them, he released the female, which, leaving the male behind to hatch the eggs in her stead, flew joyously to Dort, with the note under her wing.
She returned in the evening. She had preserved the note.
Thus it went on for fifteen days, at first to the disappointment, and then to the great grief, of Van Baerle.
On the sixteenth day, at last, she came back without it.
Van Baerle had addressed it to his nurse, the old Frisian woman; and implored any charitable soul who might find it to convey it to her as safely and as speedily as possible.
In this letter there was a little note enclosed for Rosa.
Van Baerle’s nurse had received the letter in the following way.
Leaving Dort, Mynheer Isaac Boxtel had abandoned, not only his house, his servants, his observatory, and his telescope, but also his pigeons.
The servant, having been left without wages, first lived on his little savings, and then on his master’s pigeons.