cover image: Journal of the Asiatic Society of Bengal  Part I  June 1843

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Journal of the Asiatic Society of Bengal Part I June 1843

1843

The altitude of the sun or moon ' when on the meridian can be read off with equal ease and the latitude of any place ascertained with the aid of a Table of Declnation pasted on the lid of the box. [...] For instance the most approved method of laying down a mridian is said to be by observations of equal altitudes of the Polestar ; but without the Nautical Almanac for the year which is not always to be obtained it often requires nights of watching and the patience of a Chaldean to catch the star in the small field of a Theodolite telecope at the precise moment necessary for the accuracy [...] To find the meridian line place the instrument or rather the line E C due north and south by any compass C being the north point and E the south at any time (arty an hour) before noon ° the sun will be observed to shine through the hole L throwing a bright round spot on the left side of the plate near one of the circles a t a a; wait till the spot comes on the circle say at G and mark the [...] Divide by 2 which gives 400 or the bisection of the arch G H move the radius to the point of the rim marked 10° which is half way (or 40°$) between the extreme $oints G and H. The direction of the radius as now placed will be that of the true meridian being the bsection of the arch G H described by the sun himself (the great Archimedes) at equal altitudes.§ The instrument having been ori [...] The obverse of these coins accordingly represented the bust or the head of the king together with his title and name while the rverse contained a cross and the name of the mint-master or the town or of both in the Latin language.
history
Pages
109
Published in
India
SARF Document ID
sarf.120250
Segment Pages Author Actions
Extract from Note Book Regarding the Genus Paussus by Capt. W. J. E. Boyes 6th Light Cavalry Assistant to the Commissioner Kemaon and Gurwhal with Four Plates
421-437 The Secretary and Sub-Secretary view
Mernorandurn on the Construction of a Portable Meridian. By E. C. Ravenshaw Esq. B. C. S.
437-443 The Secretary and Sub-Secretary view
Descriptive List of some Coins Lately Received from the University of Christiana by the Asiatic Society By Dr. E. Roer Librarian Asiatic Society
443-447 The Secretary and Sub-Secretary view
Additions to the Catalogue of Nepal Birds by B. H. Hodgson Esq.
447-450 The Secretary and Sub-Secretary view
On an Improved Simpiesometer “ The Tropical Tempest Simpiesometer ” just Received in Calcutta. By H. Piddington Sub-Secretary Asiatic Society &c.
451-453 The Secretary and Sub-Secretary view
Report on the Goverment Experimental Working of the Copper Mines of Pokree in Ghurwal with Notices of other Copper Mines. By G. S. Lushinton Esq. Commissioner Kumaon and Ghurwal
453-472 The Secretary and Sub-Secretary view
Brief History of Kalat Brought down to the Deposition and Death of Mehrab Khan Braho-ee. By Major Robert Leech
473-512 The Secretary and Sub-Secretary view
Proceedings of the Asiatic Socicty. Meeting of Wednesday Evening 7th June 1843
513-522 The Secretary and Sub-Secretary view

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