_The Unknown_.--This is the third summer that I have made it the scene of an annual visit. Independently of the natural beauties found in Illyria, and the various sources of amusement which a traveller fond of natural history may find in this region, it has had a peculiar object of interest for me in the extraordinary animals which are found in the bottom of its subterraneous cavities: I allude to the Proteus anguinus, a far greater wonder of nature than any of those which the Baron Valvasa detailed to the Royal Society a century and half ago as belonging to Carniola, with far too romantic an air for a philosopher. _Phil_.--I have seen these animals in passing through this country before; but I should be very glad to be better acquainted with their natural history. _The Unknown_.--We shall soon be in that part of the grotto where they are found, and I shall willingly communicate the little that I have been able to learn respecting their natural characters and habits. _Eub_.--The grotto now becomes really magnificent; I have seen no subterraneous cavity with so many traits of beauty and of grandeur. The irregularity of its surface, the magnitude of the masses broken in pieces which compose its sides, and which seem torn from the bosom of the mountain by some great convulsion of nature, their dark colours and deep shades form a singular contrast with the beauty, uniformity, I may say, order and grace of the white stalactical concretions which hang from the canopy above, and where the light of our torches reflected from the brilliant or transparent calcareous gems create a scene which almost looks like one produced by enchantment. _Phil_.--If the awful chasms of dark masses of rock surrounding us appear like the work of demons who might be imagined to have risen from the centre of the earth, the beautiful works of Nature above our heads may be compared to a scenic representation of a temple or banquet hall for fairies or genii, such as those fabled in the Arabian romances. _The Unknown_.--A poet might certainly place here the palace of the King of the Gnomes, and might find marks of his creative power in the small lake close by on which the flame of the torch is now falling, for there it is that I expect to find the extraordinary animals which have been so long the objects of my attention. _Eub_.--I see three or four creatures, like slender fish, moving on the mud below the water.