beji^g the .i^^r/^^ K^'»A^ year o£his^ /^49 being 
7 txcpes 7 5 ) ^iiid bficaufe ©f that gi^ rwplucion- of af- 
fairs which in that year did, betkll him the begin- 
ning whereof, !aad the greateft part of it, being much 
jtp.hi^ con tent, but the end of it ;;lC) fad and diimal. 
^ r Ampngfl thehp^ppinefies of that ye^r^ he reckons^ ^xft, 
Kis finifliiiig and publiJliing the latter parr-of his MaMm 
Ccelejlis (^containing the obfervationsof 48 years. ) And 
then, the coming of Mr- Hally to him at Dantjick^ and 
abode with hirn fbr fome months ; and the great fatif- 
fad:ion he received • therein, ; ; Having, before, much de- 
lired, that fome ito^x\iQ \R^yal Society at Lmdon (ac- 
quainted with the way of obferving there , by Tele/copuJ^ 
Sight J,) might come to him to Da?itfc\, to view the .man- 
ner of His obferving, (by plain, fights, and the naked 
Ey;^ Who havipgr thqs been jan Ey-witnel$ of both 
ways riugHt fatisfy that 6'<;>/;?>^^ pf the comparative good- 
nels of both s at left, that His way of obiervirig was 
not fo defpieable, as might by fome be thought or be 
pretended. And the great fatisfad:ion that Mr. Hally 
did /much beyond his expecJiation j there receive, the 
Author looks, upon as a great happinefs. And, that this 
happened before that difmal deftrudlion of his Obfer- 
vatories and Inftruments: (for, after that, it would 
have been impoffible ;) And, that the Obfervations then 
made (in Mr. Hally's prefence, and with his affiftance,) 
.were wonderfully preferved from the fire, wherein fo 
many of other things perilhed. 
Fortherehad (divers years before) happened a con*- 
troverfy between Mr. Hooi^ and him (and divers letters 
pafled thereupon) concerning the excellency of Telefco^ 
picj^ Sights ; which Mr. HooJ^ did much prefer before 
the Plain Sights ^ ufed by Tycho, by the Landgrave^ by 
all obfervers heretofore, and by this Author. As if it 
were not poffible, with the(e.&]g>^^j*, fbe the Inftruments 
never fo large or accurate J to make Obfervations nearer 
r / , then 
