The Naturalist on the Thames

by C. J. Cornish

[FISHING BOATS AT LEIGH]

THE NATURALIST ON THE THAMES

[THE THAMES AT SINODUN HILL]

Fresh water is almost the oldest thing on earth. While the rocks have been melted, the sea growing salter, and the birds and beasts perfecting themselves or degenerating, the fresh water has been always the same, without change or shadow of turning. So we find in it creatures which are inconceivably old, still living, which, if they did not belong to other worlds than ours, date from a time when the world was other than it is now; and the fresh-water plants, equally prehistoric, on which these creatures feed. Protected by this constant element the geographical range of these animals and plants is as remarkable as their high antiquity. There are in lake Tanganyika or the rivers of Japan exactly the same kinds of shells as in the Thames, and the sedges and reeds of the Isis are found from Cricklade to Kamschatka and beyond Bering Sea to the upper waters of the Mackenzie and the Mississippi. The Thames, our longest fresh-water river, and its containing valley form the largest natural feature in this country. They are an organic whole, in which the river and its tributaries support a vast and separate life of animals and plants, and modify that of the hills and valleys by their course. Civil law has recognised the Thames system as a separate area, and given to it a special government, that of the Conservators, whose control now extends from the Nore to the remotest springs in the hamlets in its watershed; and natural law did so long before, when the valley became one of the migration routes of certain southward-flying birds. Its course is of such remote antiquity that there are those who hold that its bed may twice have been sunk beneath the sea, and twice risen again above the face of the waters. [1] It has ever been a masterful stream holding its own against the inner forces of the earth; for where the chalk hills rose, silently, invisibly, in the long line from the vale of White Horse to the Chilterns the river seems to have worn them down as they rose at the crossing point at Pangbourne, and kept them under, so that there was no barring of the Thames, and no subsequent splitting of the barrier with gorges, cliffs, and falls. Its clear waters pass from the oolite of the Cotswolds, by the blue lias and its fossils, the sandstone rock at Clifton Hampden, the gravels of Wittenham, the great chalk range of the downs, the greensand, the Reading Beds, to the geological pie of the London Basin, and the beds of drifts and brick earth in which lie bedded the frames and fragments of its prehistoric beasts. In and beside its valley are great woods, parks, downs, springs, ancient mills and fortresses, palaces and villages, and such homes of prehistoric man as Sinodun Hill and the hut remains at Northfield. It has 151 miles of fresh water and 77 of tideway, and is almost the only river in England in which there are islands, the famous eyots, the lowest and largest of which at Chiswick touches the London boundary.

After leaving Oxford the writer has lived for many years opposite this typical and almost unspoilt reach of the London river, and for a considerable time shot over the estate on the upper Thames of which Sinodun Hill is the hub and centre. This fine outlier of the chalk, with its twin mount Harp Hill, dominates not only the whole of the Thames valley at its feet, but the two cross vales of the Thame and the Ock. On the bank opposite the Thame joins the Isis, and from thence flows on the THAMES. Weeks and months spent there at all seasons of the year gave even better opportunities for becoming acquainted with the life of the Upper Thames, than the London river did of learning what the tidal stream really is and may become. Fish, fowl and foxes, rare Thames flowers and shy Thames chub, butterflies, eel-traps, fountains and springs, river shells and water insects, are all parts of the "natural commodities" of the district. There is no better and more representative part of the river than this. Close by is Nuneham, one of the finest of Thames-side parks, and behind that the remains of wild Oxfordshire show in Thame Lane and Clifton Heath. How many centuries look down from the stronghold on Sinodun Hill, reckoning centuries by human occupation, no one knows or will know. There stands the fortress of some forgotten race, and below it the double rampart of a Roman camp, running from Thame to Isis. Beyond is Dorchester, the abbey of the oldest see in Wessex, and the Abbey Mill. The feet of the hills are clothed by Wittenham Wood, and above the wood stretches the weir, and round to the west, on another great loop of the river, is Long Wittenham and its lovely backwater. Even in winter, when the snow is falling like bags of flour, and the river is chinking with ice, there is plenty to see and learn, or in the floods, when the water roars through the lifted hatches and the rush of the river throbs across the misty flats, and the weeds and sedges smell rank as the stream stews them in its mash-tub in the pool below the weir.

[1] Phillips, "Geology of Oxford and of the Valley of the Thames."

[THE FILLING OF THE THAMES]

In the late autumn of 1893, one of the driest years ever known, I went to the weir pool above the wood, and found the shepherd fishing. The river was lower than had ever been known or seen, and on the hills round the "dowsers" had been called in with their divining rods to find the vanished waters.

"Thee've got no water in 'ee, and if 'ee don't fill'ee avore New Year, 'ee'll be no more good for a stree-um"! Thus briefly, to Father Thames, the shepherd of Sinodun Hill. He had pitched his float into the pool below the weir--the pool which lies in the broad, flat fields, with scarce a house in sight but the lockman's cottage--and for the first time on a Saturday's fishing he saw his bait go clear to the bottom instead of being lost to view instantly in the boiling water of the weir-pool. He could even see the broken piles and masses of concrete which the river in its days of strength had torn up and scattered on the bottom, and among them the shoals of fat river fish eyeing his worm as critically as his master would a sample of most inferior oats. Yet the pool was beautiful to look upon. Where the water had sunk the rushes had grown taller than ever, and covered the little sandbanks left by the ebbing river with a forest of green and of red gold, where the frost had laid its finger on them. In the back eddies and shallows the dying lily leaves covered the surface with scales of red and copper, and all along the banks teazles and frogbits, and brown and green reeds, and sedges of bronze and russet, made a screen, through which the black and white moorhens popped in and out, while the water-rats, now almost losing the aquatic habit, and becoming pedestrian, sat peeling rushes with their teeth, and eyeing the shepherd on the weir. Even the birds seemed to have voted that the river was never going to fill again, for a colony of sandpipers, instead of continuing their migration to the coast, had taken up their quarters on the little spits of mud and shingle now fringing the weir-pool, and were flitting from point to point, and making believe it was a bit of Pagham Harbour or Porchester Creek. On every sunny morning monster spiders ran out from the holes and angles of the weir-frame, and spun webs across and across the straddling iron legs below the footbridge, right down to the lowered surface of the water, which had so sunk that each spider had at least four feet more of web than he could have reckoned upon before and waxed fat on the produce of the added superficies of enmeshed and immolated flies. So things went on almost till New Year's Eve. The flats of the Upper Thames, where the floods get out up the ditches and tributaries, and the wild duck gather on the shallow "splashes" and are stalked with the stalking-horse as of old, were as dry as Richmond Park, and sounded hollow to the foot, instead of wheezing like a sponge. The herons could not find a meal on a hundred acres of meadow, which even a frog found too dry for him, and the little brooks and land-springs which came down through them to the big river were as low as in June, as clear as a Hampshire chalk stream, and as full of the submerged life of plants. Instead of dying with the dying year at the inrush of cold water brought by autumn rains, all the cresses, and tresses, and stars, and tangles, and laced sprays of the miniature growth of the springs and running brooks were as bright as malachite, though embedded in a double line of dead white shivering sedge. And thus the shortest day went by, and still the fields lay dry, and the river shrank, and the fish were off the feed; and though murky vapours hung over the river and the flats and shut out the sun, the long-expected rains fell not until the last week's end of the year. Then at last signs and tokens began by which the knowing ones prophesied that there was something the matter with the weather. The sheep fed as if they were not to have another bite for a week, and bleated without ceasing, strange birds flew across the sky in hurrying flocks, and in all the country houses and farmers' halls the old-fashioned barometers, with their dials almost as big as our eight-day clocks and pointers as long as a knitting-needle, began to fall, or rather to go backwards, further than was ever recorded. And whereas it is, and always has been, a fact well known to the owners of these barometers that if they are tapped violently in the centre of their mahogany stomachs the needle will jerk a little in the direction of recovery, and is thereby believed to exercise a controlling influence in the direction of better weather, the more the barometers were tapped and thumped the more the needle edged backwards, till in some cases it went down till it pointed to the ivory star at the very bottom of the dial, and then struck work and stuck there.