Chapter 25
January S. 23 degrees to S. 17 degrees February S. 17 " S. 8 March S. 7 " N. 4 April N. 5 " N. 15 May N. 15 " N. 22 June N. 22 " N. 23 July N. 23 " N. 18 August N. 18 " N. 8 September N. 8 " S. 3 October S. 3 " S. 14 November S. 15 " S. 22 December S. 22 " S. 23
To use the card.--Draw a broad pencil line, which may afterwards be rubbed out, corresponding to the date of travel, and there will be no further confusion.
Then, to know what o'clock it is, "span out" (see "Spanning") roughly the altitude of the sun. The point in the diagram where the altitude so obtained crosses the pencil mark, corresponds to the position of the sun. The hour is then read off; and the compass bearings on the diagram are adjusted by holding it level, and turning it round until a line, drawn from its centre through the point in question, points towards the sun. As to the moon or a star, if its declination be unknown, but its bearing and altitude being given, its declination and path may be found, and therefore the time since its rising or before its setting; a most useful piece of information to a traveller. Watches break, and compasses cannot be used on horseback without stopping, and therefore a diagram of this description, of which any number of copies can be traced out, may be of use for rough purposes.
Other Signs of Direction.--Bearings by the Growth of Trees.--In exposed situations and near the sea, the growth of trees is rarely symmetrical; they betray by their bent heads and stunted branches the direction of the prevalent influences most adverse to their growth. This direction is constant over wide districts in a flat country, but cannot be equally relied upon in a hilly one, where the mountains and valleys affect the conditions of shade and shelter, and deflect the course of the wind.
Moss grows best where there is continuous damp, therefore it prefers that side of a tree which affords the most suitable combination of exposure to damp winds and shelter from the sun. When the winds do not differ materially in dampness, the north side of the forest trees are the most thickly covered with moss.
Bearings by the shape of Ant-hills.--That most accurate observer, Pierre Huber, writes as follows concerning the nests of the yellow ants, which are abundantly to be found in the Swiss Alps and in some other mountainous countries. It must be recollected, in reading his statement, that the chief occupation of ants is to move their eggs and larvae from one part of the nest to another, to ensure them a warm and equable temperature; therefore, it is reasonable to expect that the nests of ants should be built on a uniform principle as regards their shape and aspect. Huber says "they serve as a compass to mountaineers when they are surrounded by thick mists, or have lost their way during the night; they do so in the following manner:--The ant-hills (of the yellow ants), which are by far more numerous and more high in the mountains than anywhere else, are longer than they are broad, and are of a similar pattern in other respects. Their direction is invariably from east to west. Their highest point and their steepest side are turned towards the point of sunrise in the winter-time (au levant d'hiver), and they descend with a gradual slope in the opposite direction. I have verified these experiences of the shepherds upon thousands of ant-hills, and have found a very small number of exceptions; these occurred only in the case where the ant-hills had been disturbed by men or animals. The ant-hills do not maintain the constancy of their form in the lowlands, where they are more exposed to such accidents."
Ripple-marks on Snow or Sand.--The Siberians travel guided by the ripples in the snow, which run in a pretty fixed direction, owing to the prevalence of a particular wind. The ripples in a desert of sand are equally good as guides; or the wind itself, if it happens to be blowing, especially to a person pushing through a tangled belt of forest. Before leaving a well-known track, and striking out at night into the broad open plain, notice well which way the wind blows as regards the course you are about to pursue.
Flight of Birds.--I have read somewhere that in the old days coasting sailors occasionally took pigeons with them, and when they had lost their bearings they let one fly, which it did at once to the land.
To follow a Track at Night.--Where the track is well marked, showers of sparks, ably struck with a flint and steel, are sufficient to show it, without taking the pains of making a flame.
Smell of an Old Track.--The earth of an old and well-trodden road has a perceptible smell, from the dung and trampling of animals passing over it, especially near to encampments. It is usual at night, when a guide doubts whether or no he is in the track, to take up handfuls of dirt and smell it. It is notorious that cattle can smell out a road.
MARKS FOR THE WAY-SIDE.
Marks on Trees--Cutting Marks.--A very excellent "tree-line" is made by cutting deep notches in a line of trees, starting from some conspicuous object, so that the notches will face the men that are to be guided by it: the trees must be so selected that three, or at least two of them, are in sight at once. The notch or sliced bark of a tree is called a "blaze" in bush language. These blazed trees are of much use as finger-posts on a dark night. They are best made by two persons; one chipping the trees on his right, and the other those on his left. If the axes are quite sharp, they only need to be dropped against the tree in order to make the chip. Doing so, hardly retards a person in his walking. Another way more suitable to some kinds of forests, is to strike the knife into the left side of the tree, to tear down a foot of bark, and to leave the bark hanging, for a double extent of white surface is shown in this way. Also, to break down tops of saplings and leave them hanging: the undersides of the leaves being paler than the upper, and the different lines of the reversed foliage make a broken bush to look unnatural among health trees, and it quickly arrests the attention. If you want a tree to be well-scored or slashed, so as to draw attention to it without fail, fire bullets into it, as into a mark, and let the natives cut them out in their own way, for the sake of the lead. They will effect your purpose admirably, without suspecting it.
Stamping Marks on Trees.--The keepers of some of the communal forests in Switzerland are provided with small axes, having the back of the axe-head worked into a large and sharp die, the impression of the die being some letter or cipher indicating the commune. When these foresters wish to mark a tree, they give it first a slice with the edge of the axe, and then (turning the axe) they deal it a heavy blow with the back of the axe-head. By the first operation they prepare a clean surface for their mark; and, by the second, they stamp their cipher deeply into the wood.
Branding Trees.--Some explorers take branding irons, and use them to mark each of their camping-places with its number. This is especially useful in Australian travel, where the country is monotonous, and there are few natives to tell the names of places.
Faggot hung to a Tree.--A bundle of grass or twigs about 2 feet long, slung by its middle athwart a small tree, at the level of the eye, by the side of a path, is well calculated to catch the attention. Its lines are so different to those seen elsewhere in the forest, that it would be scarcely possible to overlook it.
Boat or Canoe Routes through lakes well studded with islands, can be well marked by trimming conspicuous trees until only a tuft of branches is left at the top. This is called, in the parlance of the "Far West," a "lopstick."
Wooden Crosses.--A simple structure like fig. 1 is put together with a single nail or any kind of lashing. It catches the attention immediately.
[Fig. 1. Sketch of cross as described].
Marks with Stones.--Marks cut on Stone.--I have observed a very simple and conspicuous permanent mark used in forest-roads, as represented in fig. 2. The stone is 8 inches above ground, 3 1/2 wide, 8 inches long: the mark is black and deeply cut. An arrow-head may be chiselled in the face of a rock and filled with melted lead. With a small "cold" chisel, 3 inches long and 1/4 inch wide, a great deal of stone carving may be readily effected.
[Sketch of stone with incised cross].
Piles of Stones.--Piles of stones are used by the Arabs in their deserts, and in most mountain-tracts. "An immense length of the road, both in the government of the Don Cossacks and in that of Tambov, is marked out on a gigantic scale by heaps of stones, varying from 4 to 6 feet high. These are visible from a great distance; and it is very striking to see the double row of them indicating the line of route over the Great Steppe - undulations which often present no other trace of the hand of man." (Spottiswoode.)
[Sketch of piled stones].
Gipsy Marks.--When gipsies travel, the party that goes in advance leaves marks at cross-roads, in order to guide those who follow. These marks are called "patterans;" there are three patterans in common use. One is to pluck three large handfuls of grass and to throw them on the ground, at a short distance from one another, in the direction taken; another is, to draw a cross on the ground, with one arm much longer than the rest, as a pointer--a cross is better than any other simple mark, for it catches many different lights. (In marking a road, do not be content with marking the dust--an hour's breeze or a shower will efface it; but take a tent-peg, or sharpened stick, and fairly break into the surface, and your mark will be surprisingly durable.) The third of the gipsy patterans is of especial use in the dark: a cleft stick is planted by the road-side, close to the hedge, and in the cleft, is an arm like a signpost. The gipsies feel for this at cross-roads, searching for it on the left-hand side. (Borrow's 'Zincali.') A twig, stripped bare, with the exception of two or three leaves at its end, is sometimes laid on the road, with its bared end pointing forwards.
Other similar marks of direction and locality, in use in various parts of the world are as follows:--Knotting twigs; breaking boughs, and letting them dangle down; a bit of white paper in a cleft stick; spilling water, or liquid of any kind, on the pathway; a litter made of paper torn into small shreds, or of a stick cut into chips, or of feathers of a bird; a string, with papers knotted to it, like the tail of a boy's kite--tie a stone to the end of it, and throw it high among the branches of a tree.
Paint.--Whitewash (which see), when mixed with salt, or grease, or glue size, will stand the weather for a year or more. It can be painted on a tree or rock: the rougher the surface on which it is painted, the longer will some sign of it remain.
Black for Inscriptions is made by mixing lamp-black (which see) with some kind of size, grease, wax, or tar. Dr. Kane, having no other material at hand, once burnt a large K with gunpowder on the side of a rock. It proved to be a durable and efficient mark. When letters are chiselled in a rock, they should be filled with black to make them more conspicuous.
Blood leaves a mark of a dingy hue, that remains long upon a light-coloured, absorbent surface, as upon the face of sandy rocks.
ON FINDING THE WAY.
Recollection of a Path.--It is difficult to estimate, by recollection only, the true distances between different points in a road that has been once travelled over. There are many circumstances which may mislead, such as the accidental tedium of one part, or the pleasure of another; but besides these, there is always the fact, that, in a long day's journey, a man's faculties of observation are more fresh and active on starting than later in the day, when from the effect of weariness, even peculiar objects will fail to arrest his attention. Now, as a man's recollection of an interval of time is, as we all know, mainly derived from the number of impressions that his memory has received while it was passing, it follows that, so far as this cause alone is concerned, the earlier part of his day's journey will always seem to have been disproportionately long compared to the latter. It is remarkable, on taking a long half-day's walk, and subsequently returning, after resting some hours, how long a time the earlier part of the return journey seems to occupy, and how rapidly different well-remembered points seem to succeed each other, as the traveller draws homewards. In this case, the same cause acts in opposite directions in the two journeys.
To Walk in a Straight Line through Forests.--Every man who has had frequent occasion to find his way from one place to another in a forest, can do so without straining his attention. Thus, in the account of Lord Milton's travels, we read of some North American Indians who were incapable of understanding the white man's difficulty in keeping a straight line; but no man who has not had practice can walk through trees in a straight line, even with the utmost circumspection.
After making several experiments, I think the explanation of the difficulty and the way of overcoming it are as follows:--If a man walks on a level surface, guided by a single conspicuous mark, he is almost sure not to travel towards it in a straight line; his muscular sense is not delicate enough to guard him from making small deviations. If, therefore, after walking some hundred yards towards a single mark, on ground that preserves his track, the traveller should turn round, he will probably be astonished to see how sinuous his course has been. However, if he take note of a second mark and endeavour to keep it strictly in a line with the first, he will easily keep a perfectly straight course. But if he cannot find a second mark, it will not be difficult for him to use the tufts of grass, the stones, or the other accidents of the soil, in its place; they need not be precisely in the same line with the mark, but some may be on the right and some on the left of it, in which case, as he walks on the perspective of their change of position will be symmetrical. Lastly, if he has not even one definite mark, but is walking among a throng of forest trees, he may learn to depend wholly on the symmetry of the changes of perspective of the trees as a guide to his path. He will keep his point of sight unchanged and will walk in its direction, and if he deviates from that direction, the want of symmetry in the change of perspective on either side of the point on which he wishes to walk, will warn him of his error. The appreciation of this optical effect grows easily into a habit. When the more distant view happens to be shut out, the traveller must regain his line under guidance similar to that by which a sailor steers who only looks at his compass at intervals--I mean by the aspect of the sky, the direction of the wind, and the appearance of the forest, when it has any peculiarity of growth dependent on direction. The chance of his judgment being erroneous to a small extent is the same on the right hand as on the left, consequently his errors tend to compensate each other. I wish some scientific traveller would rigidly test the powers of good bushmen and find their "probable" angular deviation from the true course under different circumstances. Their line should be given to them, and they should be told to make smokes at intervals. The position of these smokes could be easily mapped out by the traveller.
The art of walking in a straight line is possessed in an eminent degree by good ploughmen. They always look ahead, and let the plough take care of itself.
To find the way down a Hill-side.--If on arriving at the steep edge of a ridge, you have to take the caravan down into the plain, and it appears that a difficulty may arise in finding a good way for it; descend first yourself, as well as you can, and seek for a road as you climb back again. It is far more easy to succeed in doing this as you ascend, than as you descend: because when at the bottom of a hill, its bold bluffs and precipices face you, and you can at once see and avoid them: whereas at the top, these are precisely the parts that you overlook and cannot see.
Blind Paths.--Faintly-marked paths over grass (blind paths) are best seen from a distance.
Lost in a Fog.--Napoleon, when riding with his staff across a shallow arm of the Gulf of Suez, was caught in a fog: he utterly lost his way, and found himself in danger. He there-upon ordered his staff to ride from him, in radiating lines, in all directions, and that such of them as should find the water to become more shallow, should shout out.
Mirage.--When it is excessive, it is most bewildering: a man will often mistake a tuft of grass, or a tree, or other most dissimilar object, for his companion, or his horse, or game. An old traveller is rarely deceived by mirage. If he doubts, he can in many cases adopt the following hint given by Dr. Kane: "Refraction will baffle a novice, on the ice; but we have learned to baffle refraction. By sighting the suspected object with your rifle at rest, you soon detect motion."
Lost Path.--If you fairly lose your way in the dark, do not go on blundering hither and thither till you are exhausted; but make as comfortable bivouac as you can, and start at daybreak fresh on your search.
The bank of a watercourse, which is the best of clues, affords the worst of paths, and is quite unfit to be followed at night. The ground is always more broken in the neighbourhood of a river than far away from it; and the vegatation is more tangled. Explorers travel most easily by keeping far away from the banks of streams; because then they have fewer broad tributaries and deep ravines to cross.
If in the daytime you find that you have quite lost your way, set systematically to work to find it. At all event, do not make the matter doubly perplexing by wandering further. Mark the place very distinctly where you discover yourself at fault, that it may be the centre of your search. Be careful to ride in such places as will preserve your tracks. Break twigs if you are lost in a woodland: if in the open country, drag a stick to make a clear trail. Marks scratched on the ground to tell the hour and day that you passed by, will guide a relieving party. A great smoke is useful for the same purpose and is visible for a long distance. (See "Signals.")
A man who loses himself, especially in a desert, is sadly apt to find his presence of mind forsake him, the sense of desolation is so strange and overpowering; but he may console himself with the statistics of his chance of safety--viz., that travellers, though constantly losing their party, have hardly ever been known to perish unrelieved.
When the lost traveller is dead beat with fatigue, let him exert a strong control over himself, for if he gives way to terror, and wanders wildly about hither and thither, he will do no good and exhaust his vital powers much sooner. He should erect some signal--as conspicuous a one as he can--with something fluttering upon it, sit down in the shade, and, listening keenly for any sound of succour, bear his fate like a man. His ultimate safety is merely a question of time, for he is sure to be searched for; and, if he can keep alive for two or three days, he will, in all probability, be found and saved. (To relieve thirst, p. 223; hunger, p. 197)
Theory.--When you discover you are lost, ask yourself the following three questions: they comprise the ABC of the art of pathfinding, and I will therefore distinguish them by the letters A, B, and C respectively:--A. What is the least distance that I can with certainty specify, within which the caravan-path, the river, or the sea-shore, that I wish to regain, lies? B. What is the direction, in a vague general way, towards which the path or river runs, or the sea-coast tends? C. When I last left the path, did I turn to the left or to the right.
As regards A, calculate coolly how long you have been riding or walking, and at what pace, since you left your party; subtract for stoppages and well-recollected zigzags; allow a mile and a half per hour for the pace when you have been loitering on foot, and three and a half when you have been walking fast. Bear in mind that occasional running makes an almost inappreciable difference; and that a man is always much nearer to the lost path, than he is inclined to fear.
As regards B, if the man knows the course of the path to within eight points of the compass (or one-fourth of the whole horizon), it is a great gain; or even if he knows B to within twelve points, say 120 degrees, or one-third of the whole horizon, his knowledge is available. For instance, let us suppose a man's general idea of the run of the path to be, that it goes in a northerly and southerly direction: then if he is also positive that the path does not deviate more than to the N.E. on the one side of that direction, or to the N.W. on the other, he knows the direction to within eight points. Similarly he is sure to twelve points, if his limits, on either hand, are E.N.E. and W.N.W. respectively.
C requires no further explanation.
Now, if a man can answer all three questions, A, B, to within eight points of the compass, and C, he is four and a half times as well off as if he could only answer A; as will be seen by the following considerations. A knowledge of B in addition to A, is of only one-third the use that it would be if C also were known.
1. Let P (fig. 1) be the point where the traveller finds himself at fault, and let P D to be a distance within which the path certainly lies; then the circle, E D F, somewhere cuts the path, and the traveller starting from P must first go to D, and then make the entire circuit, D E H F D, before he has exhausted his search. This distance of P D + D E H F D = P D + 6 P D nearly, = 7 P D altogether, which gives the length of road that the man must be prepared to travel over who can answer no other than the question A. Of course, P D may cut the path, but I am speaking of the extreme distance which the lost man may have to travel.
[Sketch as described above].
Supposing that question B can be answered as well as question A, an that the direction of the line of road lies certainly within the points of the compass, P S and P R. Draw the circumscribing parallelogram, G L H E M, whose sides are respectively parallel to P S and P R. Join L M. By the conditions of this problem, the path must somewhere cut the circle E D F; and since L M cuts L H, which is a tangent to it, it is clear it must cut every path--such as a a, parallel to L H, or to P R--that cuts the circle. Similarly, the same line, L M, must cut every path parallel to P S, such as b b. Now if L M cuts every path that is parallel to either of the extreme directions, P R or P S, it is obvious that it must also cut every path that is parallel to an intermediate direction, such as c c, but
PL = PH/cos HPL = PD/cos 1/2 RPS;
The consequence of which is that P L exceeds P D by one-sixth, one-half as much again, or twice as much again, according as R P S = 60 degrees, 90 degrees degrees, or 140 degrees.