. Thus Cook had no chronometer
supplied to him.

Green had accompanied Mr. Maskelyne, afterwards Astronomer Royal, to
Barbados in 1763 in H.M.S. Princess Louisa, in order to test Harrison's
timekeeper, and also a complicated chair, from which it was supposed
observations of Jupiter's satellites could be observed on board ship; and
as this trial afforded the final triumph of the new method, one would
have thought that on a voyage of circumnavigation he would have made
every effort to get one of these watches.

Be this as it may, the Endeavour had no chronometer, and lunars were the
mainstay of the expedition.

In these observations Green was indefatigable. Cook, an excellent
observer himself frequently took part in them; but it was Green's
especial business, and no doubt to him is due the major part of the
determinations of accurate longitude, which is one of the very remarkable
points of this voyage.

Green's log, which is extant, is filled with lunar observations, and the
extraordinary coincidence between different observations attests the care
with which they were made. I dwell upon this because, while full of
admiration for Cook's knowledge, and his untiring zeal in every detail of
his expedition, it is evident, from a study of the original documents,
that without Green many opportunities of getting longitude would have
been lost, Cook having no time to spare to make use of them. Let us give
honour to whom honour is due.

The final results of the observations are not equally good, but this
arises from the errors, before referred to, in the moon's place in the
heavens as given in the almanac, which would vary with her position, and
affect the longitude accordingly. The astonishing thing is, not that some
longitudes are considerably in error, but that the majority of them are
so near the truth.

The Endeavour sailed from the Thames on June 30th, 1768, and was in
Plymouth Sound from July 14th to the 26th, when she finally sailed, Banks
and the scientific staff having joined here.

She carried a complement, all told, of ninety-four, and very close
stowage it must have been.

A list is given in this book, immediately before the "Journal," of every
person on board when the ship sailed from Plymouth.

The draught of the ship was 13 feet 6 inches, and her provisions were
calculated to last eighteen months. The original intention had been that
the transit of Venus should be observed at the Marquesas; but the
Dolph