ABSTRACT

TothemostillustriousandhonourableSirWalter Raleigh,Knight,CaptainoftheQueen'sGuard,Lord

MosTILLUSTRIOUSSIR, Thatnothingisatoncebroughtforth,andperfected,

isanobservationweemaymakeasfromotherthings,soina moreespecialmannerfromArtsandSciences.For(notto speakeanythingoftherestwhichyethaveallofthemin successionoftimeshadtheiraccessionsofperfection),ifwee buttaketheastronomicallwritingsofAratus,orofEudoxus (accordingtowhoseobservationsAratusisreportedbyLeontinsl\1echanicustohavecomposedhisPhrenomena),and comparethesamewiththelaterwritingsofPtolomy:what erroursandimperfectionsshallwemeetwithall?