AERIS IN TVBIS, 293 



quns valorcs ftqucnti modo conrtruere Ikcbit. Ex 

 datd iii punclo S depfitate Q^ valde puruni a denfi- 

 tate B quae in acquil.brio lub(i(Vt, d.(crepanrc, coUi- 

 gatur /2^ pro quo fumfine fufficict ^"^— iiir.cque 

 dcfcribiuur fuper axe A B linca curua CQD, ct 

 cuiquc ablcifllic AS— S conucniat applicata SQ^n / g^ 

 n: ^^^. lyeinde cum etiam dctur cclcritas in S , 

 qua vno minuto (lcundo conficiatur (patium := T , 

 coiillituatur in S applicata S T :ir T V A_ ficque 

 de(cr.batgr curua K T K. His iam duabus lincis con- Tab IV; 

 ftruds CQU et E T F (uper eodem axe AB duac ^'S- 7*^ 

 nf.uae I-neae formcntur primo fcilicet linca G F H 

 lupra axem A B lumenco applicatas S T — i S T 



— iSQ, tum Tcro linea I AK in(ra axcm iunendo 

 applicatas S A =^ S T + ^ SQ_; quo fado erit olT': S 



— Sr et aA':S — — SA, hinque integral.a per 

 arcas exhibendo : 



ar:Sr::AGSr et «A:S--AISA 



Per b-inas autem folas fupcriorcs curuas ( fig. 72 ) 

 habcbimus : 



ar':S = UST-SQ_}; a A^: Scr-! (STh-SQ ) 



«r:S=:;(AEST-ACSQ);aA:Sr-^AEST+ACSQ) 



lam clapro tcmpore quocunque ; minuiorum (ecun- Tab. lY. 

 dorum in axe AB \trinque a purdo S capiutur Fig. 72, 

 fpatium ST — SrirlVlA?, -vt fit ATziS+fVilf 

 et A ; — S — / V '-— hincque cuidens efl fore 



Oo 3 * 0.T': 



