"What are you going to do with that rod?"

"Whip Isla for a yellow trout for you."

"Isla?"

"Not our Loch, but the quick water yonder."

"You know," she said, "to a Yankee girl those moors appear rather--rather lonely."

"Forbidding?"

"No; beautiful in their way. But I am in awe of Glenark moors."

He smiled, lingering still to loop on a gossamer leader and a cast of tiny flies.

"Have you--" she began, and smiled nervously.

"A gun?" he inquired coolly. "Yes, I have two strapped up under both arms. But you must come too, Yellow-hair."

"You don't think it best to leave me alone even in your own house?"

"No, I don't think it best."

"I wanted to go with you anyway," she said, picking up a soft hat and pulling it over her golden head.

On the way across Isla bridge and out along the sheep-path they chatted unconcernedly. A faint aromatic odour made the girl aware of broom and whinn and heath.

As they sauntered on along the edge of Isla Water the lapwings rose into flight ahead. Once or twice the feathery whirr of brown grouse startled her. And once, on the edge of cultivated land, a partridge burst from the heather at her very feet--a "Frenchman" with his red legs and gay feathers brilliant in the sun.

Sun and shadow and white cloud, heath and moor and hedge and broad-tilled field alternated as they pa.s.sed together along the edge of Isla Water and over the road to Isla--the enchanting river--interested in each other's conversation and in the loveliness of the sunny world about them.

High in the blue sky plover called en pa.s.sant; larks too were on the wing, and throstles and charming feathered things that hid in hedgerows and permitted glimpses of piquant heads and twitching painted tails.

"It is adorable, this country!" Miss Erith confessed. "It steals into your very bones; doesn't it?"

"And the bones still remain Yankee bones," he rejoined. "There's the miracle, Yellow-hair."

"Entirely. You know what I think? The more we love the more loyal we become to our own. I'm really quite serious. Take yourself for example, Kay. You are most ornamental in your kilts and heather-spats, and you are a better Yankee for it. Aren't you?"

"Oh yes, a hopeless Yankee. But that drop of Scotch blood is singing tunes to-day, Yellow-hair."

"Let it sing--G.o.d bless it!"

He turned, his youthful face reflecting the slight emotion in her gay voice. Then with a grave smile he set his face straight in front of him and walked on beside her, the dark green pleats of the McKay tartan whipping his bared knees. Clan Morhguinn had no handsomer son; America no son more loyal.

A dragon-fly glittered before them for an instant. Far across the rolling country they caught the faint, silvery flash of Isla hurrying to the sea.

Evelyn Erith stood in the sunny breeze of Isla, her yellow hair dishevelled by the wind, her skirt's edge wet with the spray of waterfalls. The wild rose colour was in her cheeks and the tint of crimson roses on her lips and the glory of the Soleil d'or glimmered on her loosened hair. A confused sense that the pa.s.sing hour was the happiest in her life possessed her: she looked down at the brace of wet yellow trout on the bog-moss at her feet; she gazed out across the crinkled pool where the Yankee Laird of Isla waded, casting a big tinselled fly for the accidental but inevitable sea-trout always encountered in Isla during the season--always surprising and exciting the angler with emotion forever new.

Over his shoulder he was saying to her: "Sea-trout and grilse don't belong to Isla, but they come occasionally, Lady Yellow-hair."

"Like you and I, Kay--we don't belong here but we come."

"Where the McKay is, the Key of the World lies hidden in his sporran," he laughed back at her over his shoulder where the clan plaid fluttered above the cairngorm.

"Oh, the modesty of this young man! Wherever he takes off his cap he is at home!" she cried.

He only laughed, and she saw the slim line curl, glisten, loop and unroll in the long back cast, re-loop, and straighten out over Isla like a silver spider's floating strand. Then silver leaped to meet silver as the "Doctor" touched water; one keen scream of the reel cut the sunny silence; the rod bent like a bow, staggered in his hand, swept to the surface in a deeper bow, quivered under the tremendous rush of the great fish.

Miss Erith watched the battle from an angle not that of an angler.

Her hazel eyes followed McKay where he manoeuvred in midstream with rod and gaff--happily aware of the grace in every unconscious movement of his handsome lean body--the steady, keen poise of head and shoulders, the deft and powerful play of his clean-cut, brown hands.

It came into her mind that he'd look like that on the firing-line some day when his Government was ready to release him from his obscure and terrible mission--the Government that was sending him where such men as he usually perish un.o.bserved, unhonoured, repudiated even by those who send them to accomplish what only the most brave and unselfish dare undertake.

A little cloud cast a momentary shadow across Isla. The sea-trout died then, a quivering limber, metallic shape glittering on the ripples.

In the intense stillness from far across the noon-day world she heard the bells of Banff--a far, sweet reiteration stealing inland on the wind. She had never been so happy in her life.

Swinging back across the moor together, he with slanting rod and weighted creel, she with her wind-blown yellow hair and a bunch of reed at her belt in his honour, both seemed to understand that they had had their hour, and that the hour was ending--almost ended now.

They had remained rather silent. Perhaps grave thoughts of what lay before them beyond the bright moor's edge--beyond the far blue horizon--preoccupied their minds. And each seemed to feel that their play-day was finished--seemed already to feel physically the approach of that increasing darkness shrouding the East--that h.e.l.lish mist toward which they both were headed--the twilight of the Hun.

Nothing stained the sky above them; a snowy cloud or two drifted up there,--a flight of lapwings now and then--a lone curlew. The long, squat white-washed house with its walled garden reflected in Isla Water glimmered before them in the hollow of the rolling hills.

McKay was softly and thoughtfully whistling the "Lament for Donald"--the lament of CLAN AOIDH--his clan.

"That's rather depressing, Kay--what you're whistling," said Evelyn Erith.

He glanced up from his abstraction, nodded, and strode on humming the "Over There" of that good bard George of Broadway.

After a moment the girl said: "There seem to be some people by Isla Water."

His quick glance appraised the distant group, their summer tourist automobile drawn up on the bank of Isla Water near the Bridge, the hampers on the gra.s.s.

"Trespa.s.sers," he said with a shrug. "But it's a pretty spot by Isla Bridge and we never drive them away."

She looked at them again as they crossed the very old bridge of stone. Down by the water's edge stood their machine. Beside it on the gra.s.s were picnicking three people--a very good-looking girl, a very common-looking stout young man in flashy outing clothes, and a thin man of forty, well-dressed and of better appearance.

The short, stout, flashy young man was eating sandwiches with one hand while with the other he held a fishing-rod out over the water.

McKay noticed this bit of impudence with a shrug. "That won't do,"

he murmured; and pausing at the parapet of the bridge he said pleasantly: "I'm sorry to disturb you, but fishing isn't permitted in Isla Water."

At that the flashy young man jumped up with unexpected nimbleness--a powerful frame on two very vulgar but powerful legs.

"Say, sport," he called out, "if this is your fish-pond we're ready to pay what's right. What's the damage for a dozen fish?"

"Americans--awful ones," whispered Miss Erith.