- One of the 12 constellations introduced at the end of the 16th century by the Dutch navigators Pieter Dirkszoon Keyser and Frederick de Houtman after their pioneer observations of the southern skies. Grus represents a long-necked wading bird, the crane. Possibly they had in mind the sarus crane of India and southeast Asia, which is the largest species of crane, standing nearly 6ft tall.
- But as this Tract is put forth merely as a history, or, if you will, as a tale, in which, amid some examples worthy of imitation, there will be found, perhaps, as many more which it were advisable not to follow, I hope it will prove useful to some without being hurtful to any, and that my openness will find some favour with all.