worth showing in Luttach. Pray follow me," and he walked before me through the open garden gate. After a few steps we reached the banks of a broad, brawling brook, which seemed in all its breadth and force to come directly from out the rocky wall before us. The rock must certainly have been thoroughly undermined. From countless smaller and larger openings the crystal-clear water streamed with such power that the numerous jets instantly formed a broad deep brook.

"This is the Luttach. On the north side of Nanos the raging Voyna rushes through a savage rocky vale, suddenly vanishing without a trace; the mountain engulfs it. They say that the Voyna in the interior of Nanos forms a deep unfathomable lake and from this lake in the interior of the mountain it flows on, breaking through the rocks, to come to light again here as the Luttach brook. This may be possible, for Nanos, like the whole Karst range, is absolutely riddled with caves. The famous Adelsberg Grotto would not be the unparalleled wonder that it is, if our population were not too indolent to explore the hollow openings and grottoes in our side of the mountain. Why, in the immediate neighbourhood of Luttach there are two caves, the depth of which is known to none, for no one has ever taken the trouble to explore them, except for a few yards."

"What absolutely unconscionable neglect!" I rejoined. "If you could succeed in finding here a spring, a mineral spring as wonderful with its grottoes as that of Adelsberg, think of how it would attract travellers and what a goal it would be for all tourists."

The Captain shrugged his shoulders. "I really do not know whether our Luttach population would desire this. They certainly feel no wish for it at present. Besides, it is questionable if our grottoes are really very large in extent, and it is probable that their exploration would be attended with some difficulty and perhaps indeed danger. I have never thought of making an attempt to explore one or the other of these, but, if you desire to do so, Herr Professor, I shall be very glad to accompany you."

I joyfully accepted the Captain's offer. Under all circumstances the exploration of a cave, hitherto unknown, possesses for me extraordinary interest; in the depths of these caves in the Karst range are found rare cave beetles, the species is confined entirely to such places. It might well be possible to discover in the Luttach grotto a species hitherto unknown. Such a prospect made me forget the threatened difficulty and danger.

The Captain smiled when he heard the reason for my interest. That a human being should be ready to subject himself to inconvenience and even to danger that he might discover a new beetle appeared to him extremely ridiculous, but he was too polite to make this evident. He promised to look about for some strong, courageous men, who, armed with torches, ladders, and ropes, should accompany us into the caves.

"I hope," he said, "that you will reap a rich harvest of rare cave beetles, but even if you do not succeed you will be abundantly repaid by the beetles and butterflies which you will find on the slopes of Nanos. A naturalist from Vienna, who was here about ten years ago and spent six weeks in Luttach, was thoroughly enraptured by the richness of his discoveries. I was then at home on leave and frequently talked with him. His best and rarest caterpillars he found near the Chapel of St. Nikolas, I believe, upon the leaves of beeches and oaks."

Here was an important piece of news! The caterpillars of the Saturnia cæcigena, the rare Dalmatian butterfly which had lured me to Luttach, lived upon beech and oak leaves. I immediately determined to seek the neighbourhood of the Chapel of St. Nikolas this very day. To St. Nikolas my first excursion should be made.

I asked the Captain the way thither. "You cannot miss it," he answered; "there are two paths, each very easy to find. The first, which is perhaps fifteen minutes the nearer, is steep in its beginning, and even dangerous for unaccustomed mountain climbers. Part of it you can see from here. It begins there at that elder bush and leads directly up the rocks by steps partly natural and partly artificial, most of them, however, giving space only for one foot. A false step, a slip, might be disastrous, therefore I can hardly advise you to take this nearer path over the rocks. It is not long; in five minutes you would reach a very pleasant, gently ascending footpath, which in fifteen minutes more would lead you past the Lonely House, to reach in another quarter of an hour the Chapel of St. Nikolas in a direct line. The second path, just as easy to find, is very charming, beginning at the last house of Luttach and leading to the left from the road to Adelsberg, winding through meadows and through oak forests, and ascending gently, past the scattered houses of the village of Oberberg. After perhaps half an hour you reach a large crucifix at a fork of the pathway. The path to the left leads to the Lonely House, that to the right directly to the Chapel of St. Nikolas without going near the Lonely House; you cannot miss it. I advise you to take the longer path. The shorter is seldom used even by the inhabitants of Luttach, because it is certainly dangerous in descending. The District Judge alone, who is very fond of flowers, often climbs up the steep rocks, in search of rare, beautiful plants."

The advice was well meant, and I determined to follow it, although the mention of the rare and beautiful plants allured me. Still, I do not willingly expose myself to danger. We returned to the garden, where our coffee awaited us in a pretty arbour covered with wild grapevine.

I hurried my breakfast, for I was burning with impatience to find near St. Nikolas my entomological treasures. Scarcely a quarter of an hour had passed before I started on my way thither, supplied with a cane and a large umbrella, my tin box upon my back, my pockets filled with glasses for beetles and boxes for caterpillars and butterflies.

The Captain had described the path to me so exactly that I really could not miss it. He had called it charming, but it was more than that. It was wondrously beautiful. It was a joy to ascend the mountain quietly, while fresh beauties of the landscape revealed themselves at every step. At my feet lay the pretty little town of Luttach, framed in emerald green meadows, bounded by the steep rocky wall against which it leaned. On the summit of this bare rock, majestically enthroned, were the remains of a ruined old castle, whose knightly possessor had in former times probably ruled over the rich valley of the Luttach.

Wherever the eye turned, whether downward to the houses and cottages in the valley, surrounded with blooming orchards, or to the distant view where the mighty mountain range bounded the horizon, its rocky peaks glowing in the sunlight--everywhere, it filled me with rapture.

And then, the fresh, delicious morning! It was a joy indeed to wander thus in the mountains.

The crucifix on the path was very quickly reached. I turned to the right, and soon the little Church of St. Nikolas lay before me.

Hitherto I had sturdily strode on without being detained by my desire to collect. But now, when the goal of my wanderings was reached, I began to search. Once more I turned on the steps of the church to feast upon the wonderful view above the tops of the oaks growing in the valley below, and then I began my work. I could have scarcely found a piece of ground more adapted for my purpose than this around St. Nikolas. The church lay in the midst of a forest of tall oaks; around them there was a rich undergrowth, and where their trunks were more rare, there spread a carpet of charming wildflowers, above which countless butterflies fluttered from one blossom to another. The wood above the chapel