C 10 9 ) 
Of the Mundus Subterraneus of Atbanafios 
Kircher. 
This long expected Subterraneous Worlds is now come to 
light, dedicated (atleaft th e Exemplar, that hath been per- 
iled by th ePubliJIser of thefe Papers , who hears. That other 
Copies bear Dedication to other Great Princes) both Co the 
prefent Pope, as being efteemed by the Author to have a part 
of his Apoflolicdl Kingdom there ? and to the Rom m Emperor 
now Regnant, who indeed in his Kingdom of Hungary , and 
infeveral Provinces of Germany, hath very many and very 
confiderable things, worthy to be obferved, under Ground # 
To give the Curious a tafte of the Contents of this Volume 9 
and thereby to excite them to a farther fearch into the re- 
cedes of Nature, for the compofure of a good Natural Hi- 
ftory? they may firft take notice, That the Author, having 
given an account in the Preface , what encouragement he re- 
ceived, for writing this Book, from the opportunity of Tra~ 
veiling with the Cardinal of Hajjta into Sicily (in which Voy- 
age, he faith. He met with, as it were, an Epitome of what 
may beobfervablein the Subterraneous parts of the Earth $ 
and in particular, with an Earth-quake of 14 days duration? 
very inftruftive ro him concerning feveral great Secrets of 
Nature :) having, l fay,thus Prefaced, he divideth his Work 
into 1 2 Books, whereinhe affirms not onely to have explica- 
ted the Divine Structure of the under-ground World, and • 
the wondrous diftribution of the Work-houfes of Nature, 
and her Majefty and Riches therein ? but alfo to have open- 
ed the Caufesof her Effe&s and Productions; whence, by 
the Marriage of Nature and Art, a happy I(Tue may follow 
for the ufe and benefit of Humane Life. 
In th efirft Book, he confiders the nature of the Centre of 
the Earth, where he delivers feveral Paradoxes touching the 
fame, and Difeourfes of the Motion of heavy Bodies, of 
Pendulous, of Projedils* 
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