cover image: Journal of the Asiatic Society of Bengal  Part II  Physical Science  1876

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Journal of the Asiatic Society of Bengal Part II Physical Science 1876

1876

1 to 13 f the Tables) the means adoted for the readings of the Regnault's hygrometer include the temperatures at which the dew disappeared from the silver capsule of the instrument which is not the case witItthe later series. [...] It is based on the assumption that the film of air around the wet bulb is saturated with vapour and that the heat lost by this film of air in falling to the temperture of the wet bulb is exactly equal to the latent beat absorbed by the water which passes into vapour in the act of bringing it to saturation. [...] One is to keep the eye on the same level' as the top of the mercurial column of the thermometer (whether that of the hygrometer or psychrometer) when taking the reading in order to avoid the errors of parallax. [...] The wings in this specimen show a remarkable approach to the plumage of the adult male ; the whole of the.lesser wing coverts are white but with a broad sagittate mark of dark brown in the centre of each feather the same coloration being extended over the bend of the carpal joint and. [...] along the anterior edge of the wing to the commencement of the greater coverts ; the black band which in the adult male extends from the neigbourhood of the carpal joint to the tips of the tertials is in this specimev represented by a corresponding band of dark chocolate brown varied by' some of the brown feathers passing in part into a decided black and by a few white spots in that part o
history
Pages
54
Published in
India
SARF Document ID
sarf.120250
Segment Pages Author Actions
VII—An Account of Exrperiments made in 1876 and 1876 in corious Parts of India for the purpose of comparing the observed Temporature of the Dew point with that cosnpested from the Psychrometer by different. Methods of Reduetion.—By Henry F. Blanford F.G.S. Meteorological Reporter to the Government of India
53-64 The Natural History Secretary view
VIII—List of the Birds collected on the Expedition into the Dafla Hills Assam together with those obtained in the adjacent Darrang Tcrai.— By Major H.H. Godwin-Austen F.R.G.S. F.Z.S. & Depufy Supt. Topographical Survey of India
64-85 The Natural History Secretary view
IX—On the Physical Geography of the Great Indian Desert with especial Reference to the former Existence of the Sea in the Indus Valley; and on the Origin and Mode of Formation of the Sand-hills.—By W.T. Blanford F.R.S.
86-103 The Natural History Secretary view
Backmatter
i-ii The Natural History Secretary view

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