Astronomy. 149 
as the translator would have known, even in his ignorance of " 
he had ouly. understood the mathematics of the subject matter 
In Art. 88, we have, “ Let the eccentric anomalies £, #’, and the radii 
“when the meaning is, “after the angle A has been Qeteruiitied pee, ig 
if 
snomaline oad v, v a Gulbis v sit tempore anterior), anomaliae excen- 
ae L, Ei’, que vectores 7,7’ ;” where it appears again that the 
atc eet a consult his Latin grammar. He would have found 
that anomaliae here cannot be the genitive singular; but aside from ey: 
there is no sense in the expression “ two places of the true anomaly v, 
It is clear, in short, that anomaliae verae, iiakde excentricae ed 
radii vectores are all in the same case, subjects of respondeant. 
In Art. 98, there occurs in the original “ Pro p enim adhiberi poterit 
: vel aequatio 4 art. praesentis, vel aequ. 18, art. 95:” which, the slightest 
ee acquaintance with the equations referred to would have enabled the 
mi translator to see, means “ For p (that is, for computing p) we may em- 
a ploy either equation 7 of the present article, or equation 18 Art. 95,”— 
ut he has it, “ Instead of p, either meen 7 of the present article, or 
equation 18 of article 95 might.be employed.” The impossibility of em- 
ploying p instead of an equation (!) we should think iwenie have led the 
translator to the discovery of his error, if indeed he was translating with 
any idea whatever of the sense of his author. 
Tn 1, we read, “The time t—7, within which the light traverses * « 
the mean distance of the earth from the sun which we take for unity, 
will be the ase of the distance Pa into 493%.” Without any refer- 
ence to the original, the blunder here is obvious. Remembering only 
that Pa is here the macgeenseet te say i ome a point of observation a, 
the meaning is: “The time #—Z' will be the product of the distance Pa 
into 4938, within Nene be 493°) rbd traverses the mean distance of 
earth from th hich ( distance) we take for unity.” More- 
over this is the vélbaliiie rendering of the original. 
The last sentence of Art. 109 stands thus in the original: “Tn tali 
casu etiam ad solutionem gine — age (art. em etn ad- 
in our inion, they do not then afford the brevi 
given (i in art. 85—105) we do not dwell 
” (viz. upon the method Loan ; 
.e methods 
