( 86s ) 
Signor D^;^i's Letter; giving feme Account of the Obferva* 
tions made at P^;'^ of the late Comer. 
"^^Mbes ^ .qH£ menfe f r^terito mxtutim tempore Horizontem 
1/^ te??ere confueverant ^ impedimentofuere c^m minks Come- 
tarn ante diem i% April is zfidere potuerimH4, lHum D.Romer^ 
cccafio?2e ob[ervj^tionu Sstellitiim Jovts habend^ ^ primiimad. 
'vertitj me Jlatim de rei mvitats admonito^ bora 4. 6\ 31 
poJlmedtAm met em, ejm dltitudinem ncccpimtcs graduum 12.22% 
10". Cum Inflrumentum direx 'i^em ad obfervaticnem Azimuth 
Cometd, illud^ anteqmm ob^ervAticnem abfoiveyem , commotum a 
curiofi familiar i^ rejlitui ?7on potuit priujquam Comet a difparuerit ; 
Judicavi tamen^fuijfe in njerttcali dtcltnante ab ortu adfepte;^- 
trip^emgrad,^^, circiter. 
Die 29 md^e^ memento per nuhes a D.Picardo vijiu ejl^ hora 
3. 9'' 3 p^(l ^^♦^' in dtitudine graduum 4. 39'* 
Die 2 Mali mar/ii afcenjione reBa medii Ccsli ex jixis exiftente 
gr. 261, aititudo Comet a eru gr, 4. 5'. Dijlantia verticalis k 
feftentrione ad ortumgr.^2, 8'* circiter. 
Die ^ mane hora 3. ^o\p, m, n, altitudo Cometh fuitgr,^^ 
3 3\ Dijlantia azimuth ali^ afept. ad ortumgr,/\.2.'^2'' circiter. 
Die 5 h, ^,^2', altitudo Cometa fuitgr^%, 10'. Dijlantia azi^r 
mutlulis a feptent* adortumgr*^/^, jo circiter c 
Deinceps tempm nubilum mane vefpere Comet <e obfervatj- 
ones invidit, 
§u£ habit£ funt^obtemporis angujliam opt at am exaUitudinem 
habere non fotuere, lU^ tamen initio Comet am reponunt in tri'^ 
angulo^ pojlremu propi cafut Mednf^ , ojlenduntque Cometam pro- 
cedere fecimduni Signortmferiemper lineamproximam^ (^fere 
parallelam illi qmm defcripjit Cometa Anni 1590 menfe Vebr, 
Magnitudo capitis vif$ Tekfcopio videbatur ferme £qmlis]^v\s 
dijco.^ aut pAulo minus , nec perfeCfe rotundum apparebat , fed 
figure ovalU^ longiore diametro horizonti pdrallclo \ quod refra* 
ctioni horizontali videtur tribuendum. 
Coma ejf^s^ Telefcopio vifa, latior, ^ ferme parabolic a ; mdo m* 
tern oculo angufla^ (jr partm inflex^ ad occafum videbatur. 
Monfieur 
