35o COG}TATIO\'£S DE RATiOKE CAUWM 



I ) Inclndnntiir lentcs tulnilne qtindintigulnris lignciic 

 a b c d IbniminibLis A ct B , ciinniitia focnlis \trii)vqtic' 

 lcntis ab vn:i paitc planac , ab altcra comicxac iit cjCKidra- 

 giiKa digitoruni Lond^n^nfmm , ct dir.ir.ctcr Ytiiustjuc ^ct 

 amplitiido odo disitorum. 



j(S) Firmetur i\\\)\\\\\^a b c d ad aliam,jabiilam cdej 

 normalitcr, cc fit longituoo tabulac f//f/j-$o,dig. X<o»<1i7j 

 ncnfmm,quaecx\traquc pattc^i^ 6opartcs aequalcs diuila fit.s 

 3 ) Jungatur cxtrcmitati c/, ct fiimctur norrualiti<;r ad 

 tabulim ecdj, tabula lingnca ejml parallcla. tabulac, 

 abcd,et concipiantur pcipcndicularcs cx centris, Icntium 

 Br et,A^ continuatae v^c ad tabuJam r y / /« , et ^ in 

 ^ et r , vbi tabulam pcncbarcnt , fiant circuii. 



..,4 ) Fiant fulcra • C l^ jK F ,ct Q.H l K , quac paritcr 

 in fitu cum tabulis dclcriptis' parallclo , ct in diucrfis,», 

 ii^f^is lcntium diHantiis ad tabulam cdef fiim,iri poliiiit. 



-'•5) Tranfcant pcr inga C D et IH cochlcac, "nd^|]VK{-'' 

 rum cxticmit:ucs Thcrmometra exndc rcfpondcntia rfci^iia-" 

 liiiril qiiantum potcft effe , ct fiinilitim 'bulborurti fiiirtari 

 pofllnt , et ita canim opc Theimomctia dcprimi cr clciiA-" 

 ri>, '\t ccnrra bulborum Thcimonxtricoriim a linciS Br 

 et'A^ feccntur. 



);,,.• • ■ ■ . ■ - ■ 



6 ) Inilftat tota Machin^i pcdi talj , vt in piano |iQr|r:i 



Pig j, zpntali circumduci , ct in plano vuticali fimul dcprimi ct , 



« eleuari, poflit. Circa nicdiuni ncmpe t;ibiilac c d^e j cx 



Fij. 3,' vtraqne "p.ntc procumbant axcs cylindrifi , tjui pcncircnt 



fiiramina cylindiica L ci O fulcronim L M ct N O, ct 



illn- c^ade cxpkanr , ita , vt fola fricftitMlc tora Mathina 



dclcripta in qual.bit iiKlmationc fcructur immobilis," xcl 



fi 



.il7 .Atl 



