e clan MacFarlane。 At length the head of the loch was reached； and the SINCLAIR stopped at Inversnaid。
Leaving Loch Arklet on the left； a steep ascent led to the Inn of Stronachlacar； on the banks of Loch Katrine。
There； at the end of a light pier； floated a small steamboat； named； as a matter of course； the Rob Roy。 The travelers immediately went on board； it was about to start。 Loch Katrine is only ten miles in length； its width never exceeds two miles。 The hills nearest it are full of a character peculiar to themselves。
〃Here we are on this famous lake；〃 said James Starr。 〃It has been pared to an eel on account of its length and windings： and justly so。 They say that it never freezes。 I know nothing about that； but what we want to think of is； that here are the scenes of the adventures in the Lady of the Lake。 I believe； if friend Jack looked about him carefully； he might see； still gliding over the surface of the water； the shade of the slender form of sweet Ellen Douglas。〃
〃To be sure； Mr。 Starr；〃 replied Jack； 〃why should I not？ I may just as well see that pretty girl on the waters of Loch Katrine； as those ugly ghosts on Loch Malcolm in the coal pit。〃
It was by this time three o'clock in the afternoon。 The less hilly shores of Loch Katrine westward extended like a picture framed between Ben An and Ben Venue。 At the distance of half a mile was the entrance to the narrow bay； where was the landing…place for our tourists； who meant to return to Stirling by Callander。
Nell appeared pletely worn out by the continued excitement of the day。 A faint ejaculation was all she was able to utter in token of admiration as new objects of wonder or beauty met her gaze。 She required some hours of rest； were it but to impress lastingly the recollection of all she had seen。
Her hand rested in Harry's； and； looking earnestly at her； he said； 〃Nell； dear Nell； we shall soon be home again in the gloomy region of the coal mine。 Shall you not pine for what you have seen during these few hours spent in the glorious light of day？〃
〃No； Harry；〃 replied the girl； 〃I shall like to think about it； but I am glad to go back with you to our dear old home。〃
〃Nell！〃 said Harry； vainly attempting to steady his voice； 〃are you willing to be bound to me by the most sacred tie？ Could you marry me； Nell？〃
〃Yes； Harry； I could； if you are sure that I am able to make you happy；〃 answered the maiden； raising her innocent eyes to his。
Scarcely had she pronounced these words when an unaccountable phenomenon took place。 The Rob Roy； still half a mile from land； experienced a violent shock。 She suddenly grounded。 No efforts of the engine could move her。
The cause of this accident was simply that Loch Katrine was all at once emptied； as though an enormous fissure had opened in its bed。 In a few seconds it had the appearance of a sea beach at low water。 Nearly the whole of its contents had vanished into the bosom of the earth。
〃My friends！〃 exclaimed James Starr； as the cause of this marvel became suddenly clear to him； 〃God help New Aberfoyle！〃
CHAPTER XVI A FINAL THREAT
ON that day； in the colliery of New Aberfoyle； work was going on in the usual regular way。 In the distance could be heard the crash of great charges of dynamite； by which the carboniferous rocks were blasted。 Here masses of coal were loosened by pick…ax and crowbar； there the perforating machines； with their harsh grating； bored through the masses of sandstone and schist。
Hollow； cavernous noises resounded on all sides。 Draughts of air rushed along the ventilating galleries； and the wooden swing…doors slammed beneath their violent gusts。 In the lower tunnels； trains of trucks kept passing along at the rate of fifteen miles an hour； while at their approach electric bells warned the workmen to cower down in the refuge places。 Lifts went incessantly up and down； worked by powerful engines on the surface of the soil。 Coal Town was throughout brilliantly lighted by the electric lamps at full power。
Mining operations were being carried on with the greatest activity； coal was being piled incessantly into the trucks； which went in hundreds to empty themselves into the corves at the bottom of the shaft。 While parties of miners who
had labored during the night were taking needful rest； the others worked without wasting an hour。
Old Simon Ford and Madge； having finished their dinner； were resting at the door of their cottage。 Simon smoked a good pipe of tobacco； and from time to time the old couple spoke of Nell； of their boy； of Mr。 Starr； and wondered how they liked their trip to the surface of the earth。 Where would they be now？ What would they be doing？ How could they stay so long away from the mine without feeling homesick？
Just then a terrific roaring noise was heard。 It was like the sound of a mighty cataract rushing down into the mine。 The old people rose hastily。 They perceived at once that the waters of Loch Malcolm were rising。
A great wave； unfurling like a billow； swept up the bank and broke against the walls of the cottage。 Simon caught his wife in his arms； and carried her to the upper part of their dwelling。
At the same moment； cries arose from all parts of Coal Town； which was threatened by a sudden inundation。 The inhabitants fled for safety to the top of the schist rocks bordering the lake； terror spread in all directions； whole families in frantic haste rushed towards the tunnel in order to reach the upper regions of the pit。
It was feared that the sea had burst into the colliery； for its galleries and passages perated as far as the Caledonian Canal。 In that case the entire excavation； vast as it was； would be pletely flooded。 Not a single inhabitant of New Aberfoyle would escape death。
But when the foremost fugitives reached the entrance to the tunnel； they encountered Simon Ford； who had quitted his cottage。 〃Stop； my friends； stop！〃 shouted the old man； 〃if our town is to be overwhelmed； the floods will rush faster than you can； no one can possibly escape。 But see！ the waters are rising no further！ it appears to me the danger is over。〃
〃And our rades at the far end of the works……what about them？〃 cried some of the miners。
〃There is nothing to fear for them；〃 replied Simon； 〃they are working on a higher level than the bed of the loch。〃
It was soon evident that the old man was in the right。 The sudden influx of water had rushed to the very lowest
bed of the vast mine； and its only ultimate effect was to raise the level of Loch Malcolm a few feet。 Coal Town was uninjured； and it was reasonable to hope that no one had perished in the flood of water which had descended to the depths of the mine never yet perated by the workmen。
Simon and his men could not decide whether this inundation was owing to the overflow of a subterranean sheet of water perating fissures in the solid rock； or to some underground torrent breaking through its worn bed； and precipitating itself to the lowest level of the mine。 But that very same evening they knew what to think about it； for the local papers published an account of the marvelous phenomenon which Loch Katrine had exhibited。
The surprising news