Phonolite at Fernando Noronha. Where civilisation has arrived at acertain point, complex formalities soon arise between the differentgrades of society: thus at Tahiti all were formerly obliged touncover themselves as low as the waist in presence of the king. Of the three zones of comparativeluxuriance, the lower one owes its moisture, and thereforefertility, to its flatness; for, being scarcely raised above thelevel of the sea, the waterfrom the higher land drains awayslowly. The vegetable-feedingChrysomelidae, so eminentlycharacteristic of the Tropics, are herealmost entirely absent (11/5. The extremity ofthe tail of this snake is terminated by a point, which is veryslightly enlarged; and as the animal glides along, it constantlyvibrates the last inch; and this part striking against the drygrass and brushwood, produces a rattling noise, which can bedistinctly heard at the distance of sixfeet. On the Cordillera of central Chile, Ibelieve the snow-line varies exceedingly in height in differentsummers. "BEAGLE" UNDER FULL SAIL, VIEW FROM ASTERN.