86 Meteoric Observations, Aug. 10 and Nov. 13, 1845. 
This conclusion is fortified when oxygen is considered in relation 
to sulphur or selenium, with which it is classified by Berzeuius. 
There is, as I think, also a perfect analogy between the reaction 
of water with certain metallic sulphides, and of muriatic acid 
with certain oxides; and I presume that the same may be said of 
the reaction between water and some selenides. 
15. As respects the propriety of holding up hydrogen as an ele- 
ment suz generis, the advocates of the salt radical doctrine do not 
agree with each other ; since according to Kanr, and Granam also 
if I remember right, hydrogen is an aériform metal, an opinion 
which I embraced independently more than twenty years since. 
But I trust that in my essay above alluded to, Lirnie’s reasoning 
in reference to this question is shown to be founded upon this pal- 
pable inversion of the truth, that the capacity of acidifiable radi- 
cals for metals is assumed to be dependent on the quantity of 
hydrogen with which they are capable of combining ; instead of 
the quantity of hydrogen which can unite with them, being di- 
rectly as their capacity for it or any other body in the table of 
equivalents.* 
In a communication which I intend to send you for the next 
number of your Journal, I hope to proceed with the refutation of 
Lresie’s reasoning. 
Arr. VII.— Account of observations on Shooting Stars at the mete- 
orice periods of August 10 and November 13, in the year 1845 ; 
. communicated by E. C. Herrick. 
ARRANGEMENTS were made here for meteoric observations during 
the nights of the Sth, 9th, 10th and 11th of August, 1845. 
ually, on some of the earlier evenings of this month, meteors 
seemed by brief observation, to be more numerous than usual, 
but as there was no systematic watch, nothing definite can be 
stated concerning their numbers. 
The evening of the 8th was almost wholly overcast, and the 
sky continued cloudy during the night. 
On the evening of the 9th, Messrs. Geo. C. Murray, and Wa. 
_ Mant. Sarr with myself, commenced observations in the open 
i a 
, ee paragraphs ninety one, &c, in my Essay in this Journal, for Jan. 1843. 
