t S°5 I 
’ nSea<! ofattra&ing other matter, p. 364. See Emu Conjedure on the 
increafe of the weight of ice on being cooled, ibid. 
Weft Indies , difficulty of going through the woods there> p. 19, 
Wiljon , Mr. See Combujiion. 
Wires, A Defcripdon of a new Syftem of, in the Focus of a Telefeope, for obferving 
the comparative Right Afcenfions and Declinations of Qteleftial Objeds ; together 
with a Method of inveftigating the fame, when, obferved by the Rhombus, though it 
happen not to be in an equatorial Pofition, by the Rev. Francis Wollnfton, LL.B 
p. 346, The author twice difappointed in attempting to afeertain the right afcenfions 
and declinations of the ftars he had laid down, p.346, 347. The rhombus" is very good 
m theory, but feldom true enough to be depended on, P . 347. A very fmall error in 
©bferving the paflage of a fiat makes a very material difference in the refult, ibid. 
Trial with a fquare placed angularly, which feems to anfwer better, ibid. See Equa~ 
irnai Micrometer . Tab. XII. fig. 1. explained, p. 347. Properties and advantages of 
the fquare preferably to the rhombus, p. 348. Method of redifying the erroneous 
pofition of the inflrument by th~ formula given by M. De Ja Lande in his Aftro- 
aomy, p. 349. Formula conftruded by the author’s fon, for inveftigating the com 
pdrative right afcenfions and declinations of ftars, ibid. Application of the formula*, 
p. 3,51. How to deduce the angle of deviation from the true equatorial pofition in 
the new fyftem of wires, p. 352. 
Wollafton, Rev. Francis, LL.B, Se® Wires., 
Z. 
Z&cby Francis de. See Aftrommkal Objervalions* 
FROM THE PRESS OF J. NlCHOtS. 
Vol, lxxv 8 
X x X 
