[Footnote: I quote from the Spanish translation, _Las Islas Canarias y el Valle Orotava,_ a highly popular work contrasting wonderfully with some of ours. The courteous Frenchman even promised that Morocco would be the Algeria of the Canaries. His observations for temperature, pressure, variation, hygrometry, and psychrometry of the Orotavan climate, which he chose for health, are valuable. He starts with a theory of the three conditions of salubrity--heat-and-cold, humidity, and atmospheric change. The average annual mean of Orotava is 66.34 degrees (F.), that of Southern France in September; it never falls below 54.5 degrees nor rises above 73.88 degrees, nor exceeds 13.88 degrees in variation.] 'in the murmurs of the breeze the legends of races long disappeared.' Naturalists modestly assigned to the old Dragon 5,000 to 10,000 years, thus giving birth to fine reflections about its witnessing revolutions which our planet underwent prior to the advent of man. So Adamson made his calabash a contemporary of the Noachian Deluge, if that partial cataclysm [Footnote: The ancient Egyptians, who ignored the Babylonian Deluge, well knew that all cataclysms are local, not general, catastrophes.] ever reached Africa. The Orotava relic certainly was an old tree, prophetic withal, [Footnote: It was supposed infallibly to predict weather and to regulate sowing-time. Thus if the southern side flowered first drought was to be expected, and vice versa. Now the peasant refers to San Isidro, patron of Orotava: he has only changed the form of his superstition.] when De Lugo and the _conquistadores_ entered the valley in 1493 and said mass in its hollow. But that event was only four centuries ago, and dates are ticklish things when derived from the rings and wrinkles of little-studied vegetation. Already Mr. Diston, in a letter to Professor Piazzi Smyth, [Footnote: 'Astronomical Experiment on the Peak of Tenerife,' _Philosoph. Trans._, part ii. for 1858.] declared that a young 'dragon,' which he had planted in 1818, became in 38 years so tall that a ladder was required to reach the head. And let us observe that Nature, though forbidden such style of progression by her _savans_, sometimes does make a local _saltus_, especially in the change of climates. Centuries ago, when the fires about Teyde were still alight, and the lava-fields about Orotava were still burning, the rate of draconian increase, under the influence of heat and moisture, might have been treble or quadruple what it would now be.