kappeareth heunderftood litrle of Aftronciisy. Which corH- 
€lering,and being alfo approved and encouraged by divers per- 
Tons of much Worth and Hbnour,as my Lord Eromeker^Sxt Jor- 
fiphWillUmfon,%\t Jonas Moore^znd others,&even by tbeKing 
alfo, he thereupon furnifhed himfelf with fuch Inftruments as 
were neceffary for his purpofe : which he particularly mentii 
ons and defcribes. Of thefe, he fakh, he mad^ the utmofi: 
and mod arduous iife that could be, in a place of fo thick and 
cloudy a Sky, as that of Sr. Hele/ja, contrary to common re» 
port, prov'd to be j having reftored about 350 fixed Stars ^ 
which were omitted in Catalogo Tychonko^ The places where- 
of he prefumeth he haih truly afllgned, taking in, or not with- 
out refpeft to, the places of fome of the Stars in the foreraen- 
tioned Catalogue ; in which the Obliquity of the Eciiptick is 
(lippofed to be 25gr. 31 n% 30 f. which (faith our Author ) 
is moft certainly too much. Yet becaufe he defigned not a 
correflionof the wholeSphear 5 and becaufe it appears not, as 
yet, within ha'f a minute, how great that Obliquiry is; and 
that this his own Catalogue may be eafily reduced to any Obli- 
quity , he thought not fit to meddle wnth that. 
After the Preface, follow the Obfervations thcmfelvesr 
wherein to his own, the Auihor hath added an ancient Cata- 
logue out of Clavius's Commentaries In Spharam Jo. de Sam- 
l^ofio; and ihii of Bartfchius e tahults Rudolf hints Kepleri: 
that being compared with thefe his Obfervatinns, it might evi* 
dently appear how very much the Ancient Globes do almoft e* 
very where differ from the Heavens, From thefe Obfervations, 
as he proceeds, he alfo propofeth fome conjefiures of the 
corruptibility, or at lead the mutability of the fixed 
Scars. 
Next there is a Table of the Right Afcenfiofis of the Sou' 
thern fixed Srars, and their Diftances from the Pole; For the 
life of Navigators*. 
Hereto is fubjoyned an Obfervation of Mer<:ury by our Au* 
thor, j^?/. 
Mercuriitranjiiusjf^b Soils Difco, Oi},2%\ Amo 167 j\ Cum 
Tentdm'me fro Solis ParalUxi. 
Of his conjefiures here made about the Suns Parallaxis , in 
his 
