[Footnote: Dr. Wilde (1837) analysed the sulphur as follows: Silica, 81·13; water, 8·87; and a trace of lime. Others have obtained from the mineral, when condensed upon a cold surface, minute crystals of alum. Mr. Addison found in the 'splendid crystals of octahedral sulphur' a glistening white substance of crystalline structure, yet somewhat like opal. When analysed it proved to contain 91 per cent. silex and the rest water.] When sitting down it is advisable to choose a block upon which dew-drops pearl. A few minutes of rest upon a certain block of marl, whose genial warmth is most grateful, squatting in the sharp cold air, neatly removes all cloth in contact with the surface. More than one excursionist has shown himself in that Humphrey Clinker condition which excited the wrath of Count Tabitha. It is evident that Teyde is by no means exhausted, and possibly it may return to the state of persistent eruption described by the eye-witness Ca da Mosto, who landed on the Canaries in A.D. 1505. Not at all impressed with the grandeur of the Inferno, we walked round the narrow rim of the crater-cirque, and were shown a small breach in the wall of porphyritic lava facing west. Mrs. Murray's authorities describe the _Caldera_ as being 'without any opening:' if this be the case the gap has lately formed. The cold had driven away the lively little colony of bees, birds, and butterflies which have been seen disporting themselves about the bright white cauldron. There was not a breath of the threatened wind. Manoel pointed out Mount Bermeja as the source of the lateral lava-stream whose 'infernal avalanche,' on May 5, 1706, [Footnote: Preceding Ca da Mosto's day another eruption (1492) was noted by Columbus, shortly before his discovery of the Antilles. Garachico was the only port in Tenerife, with a breakwater of rocky isle and water so deep that the yardarms of men-of-war could almost touch the vineyards. Its quays were bordered by large provision-stores, it had five convents, and its slopes were dotted with villas. After an earthquake during the night a lava-stream from several cones destroyed the village Del Tanque at 3:30 A.M., and at 9 P.M. another flood entered Garachico at seven points, drove off the sea, ruined the mole, and filled the port. It was followed by a cascade of fire at 8 A.M. on the 13th of the same month, and the lava remained incandescent for forty days.] overwhelmed 'Grarachico, pueblo rico,' [Footnote: Alluding to the curse of the Franciscan Friar, who devoted the town to destruction in these words:-- 'Garachico, pueblo rico, Gastadero de dinero, Mal risco te caiga encima!']