( $001 ) 
By this method he affirms to have laid open "^ven the (malleft 
ramifications of the Arteria hepatica^ that cannot be bared of 
the flelh, and that are poflibly more in number, than thofe of 
the vena porta and cavai^iMt together. 
lllJThree Letters of ]o.l)om\mcus CaffiouSj concerning his Bypo* 
thefts of the Suns moticn,and bis doBrine of J^efraSions -^printed at 
Bononia in 4**. 
TH E yJr/? Letter is in Latine^to Gemintan Montanarins^puh" 
lick profcffor of Milhematicks in Bonomenji Arcbigym^ 
nafio i who wai calculstting Ephemerides of the Suns place^ 
according to the/^mr Hypothefis of Cajfinus. His former 
^befs was grounded aponOblcrvations of the Sun,from whofc 
Alcitudej^wh^n they were great^he made no Abatement 5 be* 
cauft?,acCQrding to the common opioion, the Refraftion is no- 
thing,pr,at IcaftJnconfiderable.A '^^wwi'rof it, was publiftied 
about 16 years ago, But afterward he changed that Hypothe/is^ 
that ft might agree with his obfervations as diljgentlv made,but 
more artificially correfted. For, having exmerkJieUafolam 
ahitudinibus exaBijJimis determrncd the height of the pole (and 
thereby of the Eqainodlial^yat Bomnia $ he obferved alfo the 
Suns meridian height in both Solftices. And fubtrafting that 
wintcr/hcight from that Equinodials height ; and the faid 
quino^tials height from the Summer height, he alwaies found 
that former difference lefs,by above four minutes and ain half^ . 
than the latter difference. Wherefore he attempted to order 
the Parallaxes and Refradions fo, as that thofe Summer and 
Winter oblervations, being correded according to that do* 
ilrinc, might yield the Suns iSbuthem greateft declination, e- 
qual to the Suns greateft declination Northward. In this Lett 
ter he fets down^What courfe he took to find theRefraiStions$ 
What Experiments he made in glas and in water ^ How he ap« 
plied them to ceteftial Refra£iiom 5 His proceeding to deter- 
mine the proportion of the height of the Air to the Semidia* 
meter of the Earth ; And at lafl to makeTafbles adfinguhsgm^ 
dns apparentis dtfianti^ i vertice. Thofe Tables make it evidenr^ 
that RefraHioms etiam in tefiivis altitudtmbHs funt ferijibik^ & ad 
vertUemufjueconfcendunti which hitherto hath alwaies been 
denyed.Not only his friends in Italy approve thefe Table$,buc 
in France TMo.fHrus Petit in prt^claro opere^quodVE NVPEJ{ls 
COMETJs 
