[Note 67:  Vide vol.  I. p.349 (March 26.)]

Another very great advantage on the part of the natives is, the intimate knowledge they have of every nook and corner of the country they inhabit; does a shower of rain fall, they know the very rock where a little water is most likely to be collected, the very hole where it is the longest retained, and by repairing straight to the place they fill their skins, and thus obtain a supply that lasts them many days.  Are there heavy dews at night, they know where the longest grass grows, from which they may collect the spangles, and water is sometimes procured thus in very great abundance. [Note 68 at end of para.] Should there be neither rains nor dews, their experience at once points out to them the lowest levels where the gumscrub grows, and where they are sure of getting water from its roots, with the least possible amount of labour that the method admits of, and with the surest prospect of success.

[Note 69:  Vide vol.  I. p.349 (March 27.)]

[Note 68:  Vide vol.  I. p.361 (March 30.)]

Another very important circumstance in favour of the native, and one which results in a measure from some of the above-mentioned considerations, is the fact, that the native sets to work to procure his supply calmly and collectedly, and before he requires it; whilst the European, even if acquainted with the method of obtaining it, would not resort to it until the last extremity, when the body was fatigued and heated by previous exertion, the mouth dry and parched by thirst, and the mind excited and anxious from apprehension.  The natural consequence of such a very different combination of circumstances would be, that the native would obtain an abundant and satisfying supply, whilst the European would never be able to procure a sufficiency to appease his thirst, but would rather fatigue and exhaust his strength the more, from his want of skill and experience, and from his body and mind being both in an unfit state for this particular kind of exertion.  Such at least, on many various occasions, I have found to be the case both with myself, and with natives with me who have not been accustomed to the scrub, or to this method of procuring water.  The difficulty and labour of finding and digging out the roots, our want of skill in selecting proper ones, the great dust arising from the loose, powdery soil in which they were, and our own previously excited and exhausted state, have invariably prevented us from deriving the full advantage we expected from our efforts.

In cases of extreme thirst, where the throat is dry and parched, or life at all in danger, the toil of digging for the roots would be well repaid by the relief afforded.  I have myself, in such cases, found that though I could by no means satiate my thirst, I could always succeed in keeping my mouth cool and moist, and so far in rendering myself equal to exertions I could not otherwise have made.  Indeed, I hold