you will find openings in the sides, into which you may thrust the person, and often stand erect in little grottoes, perfectly incrusted with a delicate white substance, reflecting the light from a thousand glittering points.  All the way you might have heard us exclaiming, “Wonderful, wonderful!  O, Lord, how manifold are thy works!” With general unity of form and appearance, there is considerable variety in “the Cabinet.”  The “Snow-ball Room,” for example, is a section of the cave described above, some 200 feet in length, entirely different from the adjacent parts; its appearance being aptly indicated by its name.  If a hundred rude school boys had but an hour before completed their day’s sport, by throwing a thousand snow-balls against the roof, while an equal number were scattered about the floor, and all petrified, it would have presented precisely such a scene as you witness in this room of nature’s frolics.  So far as I know, these “snow-balls” are a perfect anomaly among all the strange forms of crystalization.  It is the result, I presume, of an unusual combination of the sulphates of lime and magnesia, with a carbonate of the former.  We found here and elsewhere in the Cabinet, fine specimens of the sulphate of Magnesia, (or Epsom salts,) a foot or two long, and three inches in thickness.

Leaving the quiet and beautiful “Cabinet,” you come suddenly upon the “Rocky Mountains,” furnishing a contrast so bold and striking, as almost to startle you.  Clambering up the rough side some thirty feet, you pass close under the roof of the cavern you have left, and find before you an immense transverse cave, 100 feet or more from the ceiling to the floor, with a huge pile of rocks half filling the hither side—­they were probably dashed from the roof in the great earthquake of 1811.  Taking the left hand branch, you are soon brought to “Croghan’s Hall,” which is nine miles from the mouth, and is the farthest point explored in that direction.  The “Hall” is 50 or 60 feet in diameter, and perhaps, thirty-five feet high, of a semi-circular form.  Fronting you as you enter, are massive stalactites, ten or fifteen feet in length, attached to the rock, like sheets of ice, and of a brilliant color.  The rock projects near the floor, and then recedes with a regular and graceful curve, or swell, leaving a cavity of several feet in width between it and the floor.  At intervals, around this swell, stalactites of various forms are suspended, and behind the sheet of stalactites first described, are numerous stalagmites, in fanciful forms.  I brought one away that resembles the horns of the deer, being nearly translucent.  In the centre of this hall, a very large stalactite hangs from the roof; and a corresponding stalagmite rises from the floor, about three feet in height and a foot in diameter, of an amber color, perfectly smooth and translucent, like the other formations.  On the right, is a deep pit, down which the water dashes from a cascade