FLVIDORVM LINEARI. 253 



t — *^, ficque hic motiis conueniet ciim ofcillationi- 

 bus penduU fimplicis cuius longitudo z:U-BE + sBC. 

 His inuentis in loco quocunque z vt fit A s — . x 

 preflio erit 



p:zik-Bz-{-^-^?'^ -^^^-^^^^ _^ cN. Mg ^g^^ 



"vbi M^ in priori loco denotat profunditatem puncfli 

 z ialra M at in pofteriori loco diftantiam in tubo 

 a termino M. Qiiare in brachio horizontaii erit 

 prcfTio 



mz^—k-hB^-'-^^^-^f±^^ et 



in z''-k+BM-'Cz''-^:^^J'-^.^^--n - ^ + N 2« 



2 M E. N ■Z''' 



l 



Coroll I. 



39. Cum ergo fluidum inter ofcillandum in 

 horizontalem E F pertingit , ob M E rr o , preflio 

 in z erit — ^ -f- E 2; , denotante E z profunditatem 

 piindi z infra lineam E F. Hinc fi tubi pars B C 

 non fit redta fed furfum inflexa , eius eieuatio fuper 

 EF maior efle ne.',uit quam k, quia tum preflio ibi 

 ficret negatiua et flaidi continuitas folueretur. 



C o r o 1 1. 2. 



40. Si ergo tubus habeat figuram A B O C D, Tab. II 

 cuius brachia A B et D C fint verticalia , medium Fig- 4^^' 

 autem BOC furfum fupra horizoatalem EF in- 



I i 3 fiexum 



