C^033 ) 
JffExlraSf of Mr.Vlmficads Letter of April 19. 167^. cofn^ 
taimngfom^ more acmrate Obfervations of hh own^ abot4$ 
jnpnttsTranfts near fome Fixed Star/:^ nfefut for determin- 
ing the Inclination of that Planet to the EcUptique. 
SIR, 
I E indofed Parper contains fome Obfervations of Jupi* 
^ JL ter, which being made from a more convenient Sta- 
tioD^ than I commonly have ufcd, are more accurate than my 
former ones And, the Planet being in a fic p lace of his Or- 
bice, they are the moft ufeful for determining his Inclination 
tQthe EcUptique^ that we can agahi cxped this fix years, or 
perhaps before he returns again to this place. Had the Larir 
tudes of the Fix'r Stars oiTycho'j conftitucion been exaft and 
coherent, we ftioiild eafily have determined the precife quan- 
tity of this Inclination and thofe regular Inequalities we find in 
this and in all the other Planets, which are found irreprefent- 
able by numbers, only by rcafon of fome latent errors in the 
Places apd Latitudes of the Fixed. 
It would be a task dcferving the pains and accuracy of the 
Learned Cajjini, and pf others that have good Obfervato* 
ncs and Inttruments, to endeavour the Rcftoring of the Fix't 
Stars, efpecially of thofe that are near the Ecliptique. Had I 
only a convenient place for obferving, a ready Affiftant, and 
other neceflary accommodations, I ftiould not doubt in a few 
nights to rccaifie qsany oiTychos errors 5 and to add fome Stars 
iQ his Catalogue, as well vifible to the bare eye, Cyet omit- 
tcdO as Telefcopical ones. 
I have made lately fome Obfervations of the utmoft Elon< 
gations of the three Inmoft Satellits s which I find greater than 
Signor CtfJ/J^riftates them, but almoft the very fame with Mr* 
Townkfs. But I have juft caufc to fufpcft fome Excentricity 
m the third^(or I find (except I miftook in my meafures,which, 
I think, I could notpoflibly do,) its Elongatioo greater on 
the one hand of J»piter than on theothcr. I intend, at another 
opportunity, to make more Try als a» carefully as I can, either 
to confirm ox deftroy this obfervatioo. 
Ffffff z Oiz 
