At the eastern end of Hong-Kong there are capital stone-quarries, which are worked with skill and facility by Chinese labourers, so that building is much facilitated; water is also abundant and generally good. A long range of mountains stretches from one end of the island to the other, of which, the highest point, called Victoria Peak, is about two thousand feet above the level of the sea; and, at the foot of the very mountain, part of the town of Victoria (and it would seem also its most unhealthy part,) is built. Now, as this range of rugged mountains extends from east to west, the harbour, and consequently the principal part of the town and places of business lying upon its northern side, it is self-evident that the influence of the south-west monsoon, which prevails during the summer months, and is then most required to dissipate the vapours generated out of the earth by a tropical sun, can scarcely ever be felt on the northern side of the mountains. It has even been remarked, that _in all parts of_ China, places so situated as to be sheltered from the influence of the south winds during the summer season, are sure to be unhealthy. The mere temperature of a place, as shewn by the thermometer, is neither an index to its unhealthiness or otherwise, nor to the actual sensations produced by it upon the human body. For instance, at Singapore, which is situated only about seventy miles from the equator, the heat is not felt to be excessive, nor is sickness prevalent during any season of the year. Yet rain falls constantly during the night, the grass looks beautifully green even in the hottest season, and when pineapples are to be seen growing wild in the hedges, and coming to perfection. But Singapore is entirely open to the southward, and its atmosphere is agitated and its vapours dissipated, by the refreshing sea-breezes which constantly pass over it. The mean temperature of the month of July last, (1843,) at Hong-Kong, was 88°, the lowest was 84°, and the highest 92°. Hence it appears, that the difference of temperature between day and night, is much less than might be expected; in fact, the _lowest_ temperature was only four degrees below the average temperature of the whole month. On one occasion only, it rose to 92° during the middle of the day, and once only, fell to 84° during the night.