The second was not exactly similar to the preceding; but, although also limited, was curious, as occurring in a high latitude during the winter season. It was on the 19th of August,[15] the weather dark and gloomy, with light breezes from north-north-east, in latitude 40° 30′ south, and longitude 138° 3′ east, being then distant about three hundred and sixty-eight miles from King’s Island, (at the western entrance of Bass’s Straits). It was about eight o’clock, P.M. when the ship’s wake was perceived to be luminous, and scintillations of the same light were also abundant around. As this was unusual and had not been seen before, and it occasionally also appeared in larger or smaller detached masses giving out a high degree of brilliancy: to ascertain the cause, so unusual in high latitudes during the winter season, I threw the towing net overboard, and in twenty minutes succeeded in capturing several _pyrosoma_, giving out their usual pale green light; and it was no doubt detached groups of these animals, that were the occasion of the light in question. The beautiful light given out by these molluscous animals soon subsided, (being seen emitted from every part of their bodies,) but by moving them about it could be reproduced for some length of time after. As long as the luminosity of the ocean was visible, (which continued most part of the night,) a number of _Pyrosoma atlanticum_, two species of _Phyllosoma_, an animal apparently allied to _Leptocephalus_, as well as several crustaceous animals, all of which I had before considered as inter-tropical species, were caught and preserved. At half-past ten, P.M. the temperature of the atmosphere on deck was 52°, and that of the water 51½°. The luminosity of the water gradually decreased during the night, and towards morning was no longer seen, nor on any subsequent night.[16] Albicores,[17] bonitos, and even a colossal whale close under the stern, beguiled a tedious hour, until we arrived in latitudes where the various species of albatross, cape petrel, and other oceanic birds afforded a change from the “finny” to the “feathered” tribe. We lost the south-east trade on the 13th of June, in about 14° 30′ south, and long. 32° 14′. west. In lat. 30° 0′ south, and long. 24° 18′ west, on the 25th of June, cape petrels[18] were first seen, and increased in numbers as we proceeded, continuing about the ship, in greater or less numbers, even to Port Jackson; albatrosses were not seen until we arrived in lat. 36° south, long. 5° 18′ west, when several species of this bird were often about the vessel.