The Progress of the Development of the Law of Storms, and of the Variable Winds; With the Practical Application of the Subject to Navigation Illustrated by Charts and Wood-Cuts (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1849 Excerpt: ...Tonkin may be expected. Typhoon of 1832. Mr. Eedfield has published an account of a typhoon August 3, which passed over Macao on the 3rd August, 1832, in which the wind changed suddenly from north to south. At Macao, The Bar. on the 2nd Aug. at 8 A.m. stood at 29-68 at 8 P.m. 29-34 3rd Aug. at 8 A.m. 29-34, at 5 P.m. 27-88 o2 Chap. This is an example of the rapid fall of the barometer L_ at the centre of a whirlwind storm. The detailed account of this storm states, that after the wind changed to the southward " the quicksilver rose at the rate of 3 of an inch per half hour." The S.W. monsoon was blowing at this time, and did not change to N.E. at Canton until the 25th of September. Atmo-I shall reprint here an abstract from the log-book of spheric.. pressure, the barque Ariel in a severe storm, reduced to civil time. It is stated that the barometer gave no indication of the approach of this storm, and that it stood high even when the ship was reduced to bare poles, which is remarkable. But on examining the fall and rise as given in the log-book, it will be seen that the barometer rose after the gale to 31 "30, having been down to 2980. This is a difference of an inch and a half of the mercurial column during the passage of the whirlwind storm. The height of the barometer on the 15th and 16th of November is not stated. The N.E. monsoon was blowing hard at the time. This might be expected to augment the force of the wind of the whirlwind in that quarter of its circuit in which it would blow from the N.E., and it may have been the means of augmenting the pressure of the atmospheric column. It was ascertained that the barometer was in good order at the time, and remained so eighteen months after the typhoo...