familiarity with the character of the principal plants and animals amongst which he would afterwards be thrown.  If he has no private means of learning the names of such persons, I should recommend him to write to some public Professor, stating all particulars, and begging the favour of his advice.  The use of the sextant may be learnt at various establishments in the City and East End of London, where the junior officers of merchant vessels receive instruction at small cost.  A traveller could learn their addresses from the maker of his sextant.  He might also apply at the rooms of the Royal Geographical Society, 1, Savile Row, London, where he would probably receive advice suitable to his particular needs, and possibly some assistance of a superior order to that which the instructors of whom I spoke profess to afford.  That well-known volume, ’The Admiralty Manual of Scientific Inquiry,’ has been written to meet the wants of uninformed travellers; and a small pamphlet, ‘Hints to Travellers,’ has been published with the same object, by the Royal Geographical Society.  It is procurable at their rooms.  There is, perhaps, no branch of Natural History in which a traveller could do so much, without more information than is to be obtained from a few books, than that of the Science of Man.  He should see the large collection of skulls in the College of Surgeons, and the flint and bone implements in the British Museum, the Christie Museum, and elsewhere, and he should buy the principal modern works on anthropology, to be carefully re-studied on his outward voyage.

Conditions of Success and Failure in Travel.—­An exploring expedition is daily exposed to a succession of accidents, any one of which might be fatal to its further progress.  The cattle may at any time stray, die, or be stolen; water may not be reached, and they may perish; one or more of the men may become seriously ill, or the party may be attacked by natives.  Hence the success of the expedition depends on a chain of eventualities, each link of which must be a success; for if one link fails at that point, there must be an end of further advance.  It is therefore well, especially at the outset of a long journey, not to go hurriedly to work, nor to push forward too thoughtlessly.  Give the men and cattle time to become acclimatised, make the bush your home, and avoid unnecessary hardships.  Interest yourself chiefly in the progress of your journey, and do not look forward to its end with eagerness.  It is better to think of a return to civilisation, not as an end to hardship and a haven from ill, but as a close to an adventurous and pleasant life.  In this way, risking little, and insensibly creeping on, you will make connections, and learn the capabilities of the country, as you advance; all which will be found invaluable in the case of a hurried or disastrous return.  And thus, when some months have passed by, you will look back with surprise on the great distance travelled over; for, if you average only three miles a day, at the end of the year you will have advanced 1200, which is a very considerable exploration.  The fable of the Tortoise and the Hare is peculiarly applicable to travellers over wide and unknown tracts.  It is a very high merit to accomplish a long exploration without loss of health, of papers, or even of comfort.