SF ai terele cht eee ee 
Leils of Comets. 392 
ee has not, so far_as_ my knowledge extol pet been 
“accounted for, I would not have presumed toa 
had I been acquainted with evena pianiie bepceaeat oa 
planation. Certainty cannot, perhaps, be attained; and 
hope, if | accomplish nothing more, to direet the attention of 
yourself and learned correspondents to the subject,—so very 
BOcouDy, but yet I believe pretty well established by experi- 
he water which flows from fountains we suppose to 
ny been mingled with the atmosphere ina state of vapour, 
- and.to have fallen from thence in the form of rain; and that 
thus a Eerpetua! circulation is kept up. This in many cases 
mee payand no doubtis, the true EP enaOr of the origin of 
vege etation is. parc evupeeaie 
Would it oe antl sir, to suppose it ae that, z as many 
springs receive their support from the exterior of the earth, 
patie: may be supplied from theanterior? It is pretty certain 
that our es is intersected in various directions by caverns, 
The shock of an earthquake will in a.few moments pass over 
a continent ; which is scarcely possible, were the earth an 
uninterrupted solid. . May not such fissures be filled with 
water? | think it at least possible, perhaps probable, Hiss 
Water preserves a communication throughout our globe, 
different distances from the surface, according to the form 
tion ~ the earth at any eee PRE nage if a passé 
“y abH ice. 
t bei n inexhaustible and not 
orton ant hes ato " the tee weal nes fountain 
ery eins is aie Buable dersant, ) Zz. 
er of Comets. —A correspondent inquires erg 
ithe taila p may be accounted for from the peculiar 
i 
