On the 17th of September he writes to his mother:--

Balranald, September 17th, 1860.

MY DEAR MOTHER,

As I have an opportunity of sending a few lines by this mail, I have
determined to take advantage of the chance, because I know how glad
you will be to receive them; but I have not time sufficient to give
you any account of our journey. We are now at the last township at
which we shall touch on our way towards the interior of the
continent. It is an out-of-the-way place, situated on the lower
part of the Murrumbidgee River. Our journey so far has been very
satisfactory: we are most fortunate as regards the season, for
there has been more rain this winter than has been known for the
last four or five years. In fact, it seems probable that we shall
finish our work in a much shorter period than was anticipated; very
likely in ten or twelve months. The country up here is beautiful;
everything green and pleasant; and if you saw it now, you would not
believe that in two months' time it could have such a parched and
barren appearance as it will then assume. I hope to be able, either
from the Darling or from Cooper's Creek, to send you some details
of our proceedings. Please to remember me to all, and

Believe me, ever your affectionate son,

WILLIAM J. WILLS.

. . .