[ 6i 9 ] 
*'!*' various obfervaticns on luminous, p, 3 ,. Confidered as a fpecies o (Aurora 
ceZm’ V \ ^ ' Nara ^ d “ Arched aurora boreaks,” p. 4 t. Extraft of a letter con- 
s r; a p ' 43< Account of a iura!nous arch ’ p - «• Earaa ° f * 
On t h» r ' f T°- S ’ P ‘ 46 ‘ Acc0Unt of fome lumin0 ^ arches, p. 47 . 
motion^ £* 3 ** P ’ ^ L “ ^ of a very liZ 
^altVT f °T d - at ’ fUPP ° fed *° be an indurated bitumen ’ M > in a 
vioufiv conffiH t , , lnCUm . matter ’ Pen£trates the ar 2 ilIa =^ &iftus which pre- 
. y tu ed the in Evening flratum between the lava, p. 87. 
Areometers. See Hydrometers. 
Arfenic made ufe of to deftroy fugar ants in the Wed Indies, p. « 4 g. 
Arundo Bambos of i Linnams, Tabafheer produced from, p. See Talajbeer. 
from COrtke fp!n0f0 - 0f Herman > Tabaflieer 
irom, p. 273'. See Tabajbeer . 
Agronomical observations on the planets Venus and Mars, made with a view to deter- 
mine the hehocentric longitude of their nodes, the annual motion of the nodes, 
and the greateft inclination of their orbits, p c 2 1 . 
Agronomy of the Hindoos attract the attention of the learned in Europe, p. r6o. 
Aurora borealis, fuppofed to confift of parallel flreanw 0 f light (hooting upwards, which, 
Archs aWS ° f perfpe<ane ’ a PP ear t0 converge towards a point, p. 103. See 
AuJUtty Dr. on thsanalyfis of heavy inflammable air, p. 31,, 
Be 
Bafe of verification, general table of the meafurement of, in Romney Marlh, p. i 34# 
Bates, remarks on the comparative aecuracy of the meafurement of two, p. 133/ Ge« 
neral table of the meafurement of the bafe of verification in Romney Marlh, p. 134. 
Bearings and fituations of various places in Ireland, p. 78. 
Bengal Tabafheer a confiderable article of its trade to Perfla and Arabia, p* 279, Ben- 
gal sera defcribed, p. 57 3. 
Bikramajit, an asra of the Hindoos defcribed, p. £70. 
Blagden, Dr. on the bell method of proportioning the excife upon fpirituous liquors, 
' P* 3 2 * m 
Blancnex, its latitude, longitude, &c. p 4 232. 
Wane, Dr. on the Nardus Indica, or Spikenard, p. 2 S 4 . 
Blockley, in Gloucefterfhire, 12 geographical miles fouth, and 72 weft of Cambridge, 
p. 102 . * 
Blood. Dephlogifticated air, being applied to the outfxde of a vein changes the colour 
of the blood contained in it, p. to;. The fame effeaed by the Ample difcharge of 
phlogtfton from the blood, when it had an opportunity of uniting with the dephlo- 
gilticated air thus prefented to it, ib, 
4 L 3 
