3 7 
resistentiae totius partem, quæ ex puppi pendet, Puppi scili- 
cet plana unumque angi. ped. quad, ampla, hæc resistentiae 
pars (the minus pressure) reperiebatur = o,4g avoir du poids , 
quando navicula 1,6909 ped. angi, uno minuto secundo emetie- 
batur i5), unde foret — = 0,177. Omnia hæc experimenta 
m 
nimiam dare resistentiam , infra patebit. Nimia enim experi- 
mentorum vastitas, nimiis machinis indigens, determinationem 
frictionis, cuilibet ipsarum parti competentis, difficillimam omni- 
no facit j unde incertitude* * oriatur necesse est, quæ præ valöre 
34) I/e ar d, Scott et Beaufoy scilicet. Vid. The rapport of the 
Committee for conducting the Experiments of the Society for 
the improvement of naval architecture. Ex aliis quibusdam e- 
nuntiatis, quæ Beaufoy ex Dni Burney late edition of Wi- 
liam Falconers Universal Dictionary of the marine excerpsit, 
obtinetur JL = o,i68. Ex tabula Dni Beaufoy in Annals of 
m 
• £ 
Philosophy (J. g.) by Thomson eruitur — 0,167 , velocitate 
rn 
— 1 ped.; velocitate vero— aped- fit — — 0,1 85. 
m 
1 5 ) Alio quodam loco (pag. u 5 ) parallelepiped! resistentiam, velocita- 
te = 1,69 ped,,, hocce modo consignat auctor: 
plus-pressure . .. . = 2,1 4 
minus-pressure . » . = 0,69 
frictio , r . = 0,59 
5,59 
Si minus-pressure adsumalur = erit -i = o,2q4? 
5,59 m 
