18038 | 
electric matter, bearing a proportion to 
the temperatures of thefe latitudes. (2) 
Thoie emitted from the fea, between the 
tropics and warmer tracts, emit lefs of the 
ele&tric fluid, than thofe from land; in 
colder regions the reverfe of this takes 
place. (3) Wapours that originate from 
mountains contain leaft, and thofe from 
plains molt, of the elevtric fluid. The 
fecond fe€tion treats of the dew, which is 
inferred to be nothing more than con- 
denfed vapours, elevated during the day 
from the foil over which the air depofiting 
it is incumbent; hence its noxious qua- 
lities, when elevated from ftagnating 
marfhes, and the various impregnations it 
has been found to contain. ‘The zhird 
fection. relates to the haze of the year 
3733, which is imputed to the immenfe 
quantity of inflammable air, extricated 
from the bowels of the earth during the 
earthquakes of Calabria, (which happened 
during the months of February and March 
that year,) firongly eleétrified, and im- 
pregnated with fulphureous, bituminous, 
earthy, and metallic, particles. The quan- 
tity was fuch as to diffufe itlelf, after a 
few months, over moit parts of Europe. 
While thefe heterogeneous particles were 
held in folution, the tranfparency of the 
atmofphere was not altered; but it was 
otherwife when they began to precipitate. 
A fimilar haze was obferved in Perfia, 
in the year 1721, after the creat earth- 
quake in Georgia, which deitroyed the 
city of Tauris. The darknefs which ob- 
feured the fun after the death of Cefar, 
may. perbaps, be affigned to a fimilar 
caule, fince it is known, that there were 
earthquakes about that time. The fourth 
fection, on rain, contains a folution of the 
moit remarkable picnomena on the fub- 
ject: as why rains are more copicus, but 
je!s frequent in the fouthern parts of our 
hemif;here than in more northern lati- 
tudes—=why in temperate latitudes rains 
aie more copious, though lefs frequent, in 
fummer than in winter—why foutherly 
winds are moft frequently accompanied 
with rain, but northerly and eafterly with 
clear weather—why a difpofition to rain 
is ufually connected with a diminution of 
Review of new Mufical Publications. 
63 
weight of the atmofphere—-why more rain 
falls on the furface,thanon {mall of the earth 
elevationsabove it—why the quantities of 
rain collected at the top of high moin-~ 
tains, and on plains about half a mile dif- 
tant from thofe mountains, are neariy 
equals—why it rains more on the weftern 
than on the eaftern coafts of Europe—and 
why in fome countries it fcarcely ever 
rains. 
The laft Chapter contains the following 
prognoftics. (1). When the barometer 
falls, and the hygrometer rifes, rain is 
announced. (2) When the barometer 
rifes, and the hygrometer falls, fair wea- 
ther may be expected: if both inftruments 
fall, windy weather will probably follow, 
efpecially if the barometer fall much be- 
low its mea height. (3) In the morn- 
ing the hygrometer is generally higher 
than at noon ; but if it ftand lower at noon, 
in a greater proportion than the difference 
of temperature demands, it prognofticates 
fair weather; on the contrary, if at noon 
it be higher than it food in the morning; 
rain may be expected. . 
To forefee the rife or fall of the baro. 
meter in the day-time.—-Oblerve it at feven 
in the morning, and again at nine, and at 
ten. If it remain fteady, or if it fall 
during that interval of time, it will pro+ 
bably fink lower. But if it rifes, the 
chances of a greater rile or of a greater 
fall are equal. | 
Again, obferve the barometer at one in 
the afternoon, and at three: if it remain 
unmoved, it is prebable that it will rife; 
but if it bas fallen, the chances of a farther 
rife or fall are equal. ~ 
The hygrometer thould be kept loofe 
under a glafs jar, to prevent it from being 
foiled by flies or duft; but the obfervae 
tions fhould be made in the oven airy and 
in the fhade, at a diftance from houfes or 
reflecied heat. It requires but about two 
minutes to arrive at its proper height. 
Such are the outlines cf the contents of 
this valuable paper, which extends to the 
Jenoth of nearly 240 pages; and which 
will, if we nniftake not, amply repay thofe 
perfons who will take the pains of gare- 
fully perufing the whole. 
REVIEW OF NEW MUSICAL PUBLICATIONS. 
Numbers One and Two of Favourite Vauxhall 
— Songs fung at Vauxball Gardens, with un- 
bounled applaufe. Compofed by F. Hook, Ej. 
EBOZe sev 
HESE two Collef&ions of Vauxhall 
Songs afford 4 new proof ot Mr.Houk’s 
inexhauflibility of fancy in this familiar 
and attractive fpecies of vocal compofition. 
Each Colleftion contains fix fongs, the, 
melodies ef which, generally fpeaking, 
have the merit of bring marked with 
tafte, originality of chargéter, and a par- 
ticular 
ei I 
