Читать книгу Trees: A Woodland Notebook - Sir Herbert Maxwell - Страница 7

Table of Contents

"Oh it's hame and it's hame, at hame I fain would be, Hame, lads, hame in the north countrie; Oh the oak and the ash and the bonny ivy tree, They a' nourish best in the north countrie."

The bard who was responsible for this ancient jingle assigned that precedence to the oak which common sentiment has always accorded to it as the monarch of British woodland. Economically, also, the oak held the first place so long as Britannia ruled the waves from wooden walls, but in this ironclad era our Admiralty has little use for oak timber, and there is now no broad-leaved or "hardwood" tree that can be cultivated so profitably as the ash. Indeed it is hardly doubtful that this is the only species of tree, willows, poplars and certain conifers excepted, which a young man may plant with reasonable expectation of receiving any pecuniary profit during his lifetime. The properties which ensure to the ash (Fraxinus excelsior) this superiority to all rivals are its hardihood, the matchless quality of its timber for many purposes, and its market value from a very early age.

First, as to its hardihood. No British tree, not even the oak, is so wary of starting into growth before all risk of late spring frost is past. Tennyson, the very Virgil among British bards for keen observation of nature, has embalmed this characteristic in a beautiful passage in The Princess:

Why lingereth she to clothe herself in love?

Delaying, as the tender ash delays

To clothe herself when all the woods are green.

Once, and once only, do I remember the prudent ash to have been caught, namely, in 1897, when after a month of deceptive warmth, the mercury fell to 10° Fahrenheit on the 22nd May. Twenty-two degrees of frost within a month of the summer solstice! No wonder the young ash foliage, which had been lured into precocious growth, was shrivelled and blackened as by fire. And that, not only in the north, but in Herts and Hants, as I had occasion to note when trout-fishing in these southern counties. Even the beech and hawthorn fared no better, but their leaves were seared brown instead of black.

Then as to wind exposure, what tree can compare with the ash for length and strength of anchorage against the gale? It is astonishing to what distance it sends its tough roots, whether they run through free soil or wind themselves into the crevices of limestone rock. This far-ranging habit renders it the worst of all neighbours to a garden, and no ash tree should be suffered to grow within fifty yards of ground where herbs or fruit are cultivated.

MANNA ASH (Fraxinus ornus) At Wakehurst Place

For toughness and strength the timber of ash has no equal, even among foreign woods; and it is always in request at a good price for waggon-building, implement-making, and other purposes. Moreover, British ash, properly grown, is more highly esteemed than ash imported from other countries. Unfortunately, owing to our neglect of systematic and economic forestry, as distinct from arboriculture and the management of game covert, ash is very seldom to be seen grown under proper conditions in the United Kingdom. It should be grown in woods sufficiently close to draw the stems up to such a height as will ensure a good length of clean bole. Standing in the open or in hedgerows, it sends out huge side branches which destroy the quality of the timber.

In consequence of our misuse of this tree, which ought to be the most valuable of all assets to British forestry, good ash timber has become exceedingly scarce; although undoubtedly there are an immense number of excellent stems in most parts of the country, which, if landowners generally understood their own interest and the true welfare of their woodland, would be felled and sold before they reached an unmanageable size.

In one respect the ash possesses a merit superior to any other hardwood tree, except, as aforesaid, willow and poplar, in that it reaches commercial maturity soonest. Grown under forest conditions in good, well-drained soil, it is most fit for the market at from fifty to seventy years of age. But, as it is readily saleable from twenty years old upwards, an ash plantation may be reckoned on bringing in some revenue from thinnings long before the main crop is ripe for the axe. For instance, I was lately offered a very good price for ash poles averaging nine inches in diameter for the manufacture of billiard cues. The regular supply is drawn from Switzerland; but could most easily be furnished from British woodland if the necessary care were bestowed upon the saplings. The trees should not be allowed to stand after attaining eighty years of growth; for the timber, even if it continued sound, hardens after that age, and, losing much of its characteristic elasticity, does not command such a good price.

Homer says that the spear of Achilles had an ashen shaft, and all true Scots should hold the ash in special honour, forasmuch as of yore it furnished staves for their national weapon, the pike. It was from the long ashen pike-shafts of Randolph Moray's handful of Scots that de Clifford's cavalry recoiled on the Eve of St. John, 1314, after thrice attempting to break that bristling fence of steel; it was through the staunchness of his pikemen that next day, on the slopes of Bannockburn, Edward Bruce was able to bear the brunt of attack by the English columns, hurl them into unutterable ruin among the Milton bogs, and so set seal, once for all, to Scottish independence and freedom.

It was probably owing to the high value that the Scots had learnt to set upon ash timber, both for military and domestic use, that this tree was more commonly planted than any other in compliance with the statute of James II. (fourteenth Parliament, cap. 80), requiring every landowner to cause his tenants to plant and maintain trees in number proportioned to the extent of their holdings. This was in 1424; in 1573 it was re-enacted, along with "sindrie louabil and gud Acts," by 6 James vi. c. 84; whereof the effect may still be traced in the landscape of many parts of Scotland in the shape of old ash trees standing round farmhouses and other homesteads. Often, where two or more farms have been thrown into one, the trees remain long after the disused buildings have been removed.

Belief in the medicinal virtues of the ash was very general in early times, probably derived from the Orient, where the manna ash (F. ornus) abounds. Yet Pliny, who recognised the difference between the two species, not only recommended extract of the common ash as a draught to cure snake-bites and as superior to any other remedy when applied to ulcers, but solemnly affirms that he has himself proved that if ash leaves are laid in a circle round a snake and a fire, the snake will crawl into the fire rather than touch the leaves. Even sage John Evelyn recommended ash extract to cure deafness, toothache and other ailments, and, later still, Gilbert White of Selborne describes the superstitious practice of passing sickly children through the stems of ash-trees, split for that purpose, in the belief that, if the clefts grew together again after the wedges were removed, the patients would recover. For household purposes, ash provides excellent firewood, which burns as well green as dry.

The tallest ash measured by Mr. H. J. Elwes in 1907, stood 146 feet high, and was 12 feet 7 inches in girth 5 feet from the ground. This fine tree is growing with many others of about equal height in Lord Darnley's park at Cobham, in Kent. The tallest ash recorded in Scotland was one at Mount Stuart, in the Island of Bute, stated to have been 134 feet high in 1879; but this has now disappeared. The loftiest certified by Messrs. Elwes and Henry as still standing is a great tree at Dalswinton, in Dumfriesshire, which, in 1904, stood 110 feet high, with a girth of only 8 feet 3 inches. Sir Archibald Buchan-Hepburn, however, claims to have one at Smeaton Hepburn measuring 124 feet in height and 11 feet in girth in 1908.

Weeping ashes have rather gone out of vogue, but they are very pretty things if the sport is grafted on a sufficiently high stem and the stock be not suffered to outgrow the graft, as it will do if not attended to. By far the most successful example of this kind of freak tree is the one at Elvaston Castle, near Derby, 98 feet high with branches hanging to a length of 60 or 70 feet, a truly remarkable object, and beautiful withal, as may be seen from the fine plate in Messrs. Elwes and Henry's book. Although its requirement of a deep, cool and generous soil render the ash unsuitable for London conditions, yet there are a few handsome weeping ashes in that city, notably one at the south-west corner of Bedford Square.

Like all our indigenous trees, the ash has impressed itself upon our place-names. Ashby, Ashton, Ashridge, Ascot—the map of England is peppered freely with such names; that of Scotland more sparsely, owing to the preponderance of Gaelic in the topography. The Gael employed several forms of his name for the ash, namely, fuinnse, fuinnsean, and fuinnseog (pronounced funsha, funshan, and funshog), whence many names in southern and western Ireland such as Funcheon, a river in Cork, Funshin, and Funshinagh several times in Connaught. But the initial consonant soon dropped off, and in northern Ireland and among the Scottish Gaels the word became uinnse (inshy) preserved in the name Inshaw Hill (Wigtownshire), Killyminshaw (Dumfriesshire), etc.; or uinnseog (inshog), recognisable in Inshock (Forfar), Inshaig (Argyll), Inshog (Nairn), Drumnaminshoch and Knockninshock (Kirkcudbright). The plural uinnsean (inshan) has assumed a very grotesque form in Wigtownshire, where there are two farms twenty miles apart named Inshanks.

Liability to disease is an important consideration in regard to forest trees, and the ash has the merit of being remarkably free from ailments. The worst malady from which it is liable to suffer seriously is known as ash canker, whereby the timber is rendered worthless except for firing. Happily it does not seem very contagious; for I have known badly cankered trees standing for twenty years and more without imparting the disease to their healthy neighbours. The late Dr. Masters attributed the mischief to the work of the larva of a small moth (Tinea curtisella). That creature may start the injury, but it is certainly taken up and aggravated by the fungoid organism Nectria ditissima. Although, as aforesaid, the disease does not appear to be readily communicable to healthy trees, it is not advisable to leave the unsightly invalids standing. The sooner they are cut down and burnt the better.

There are between fifty and sixty exotic species of ash, but among them there is only one known to me as specially desirable for ornamental planting, namely, the Manna Ash (Fraxinus ornus), producing a profusion of creamy-white plumes of blossom in June. This pretty tree is the source of the manna of commerce, a sweet and mildly laxative substance obtained by tapping the stem in late summer and allowing the sap which flows from the wound to coagulate.

Manna of various sorts is collected from many different kinds of plant; that which supported the Israelites in the desert is supposed to have been an exudation from the tamarisk; but Sicilian manna is the only kind that is recognised as an article of European trade. In Sicily the manna ash is planted in frassinetti or ash-yards, grown for eight years and regularly tapped, till the main stem is exhausted, when it is cut down, and a fresh growth is allowed to spring from the root. The active principle in manna is mannite, a hexatomic alcohol, chemically expressed as C₆H₈(OH)₆. The manna ash is not often seen in this country; those specimens which are of any size are invariably grafted plants; but a stock is easily raised from seed, which Continental nurserymen readily supply. In Dalmatia and Montenegro, where this tree abounds, drivers stick the flowers thereof in the harness of their horses to keep off flies, which dislike the peculiar odour. A Chinese species (F. mariesii) is near of kin to F. ornus, and is said to bear flowers of superior beauty to that tree; but of this I can only write from hearsay.