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De

Machinis Hydraulicis.

ffi~+Mti'!a-~Mt@'}e;

;a.mr-

m·~i\i'3-€'1'&

PROPOSITIO XXIII,.

Proble¡na.

Hydrometmm

muliiplex.

SiGut pdori machi1'a calorem,

&

frígus dig–

nofcirnus ; ita fequentíbus íicci,

&

humidi mu-

A

cationes,

&

gradus metiemu_r. Sir

er.go

cannabí–

nus funis fatis longus , qm per altquas hor_as

aqua: falf:r immergarur,

exrend~m~

demde, c1r–

cumvolvaturquecylindro B,

adpc1~turque

po.n–

dus modicum

e ;

cyliodrus autem

111~rnamr

in–

dice. Díco fore

l1t

humido acre '

ÍUDIS

fiar bre–

vior ,

&

confequenrer cylindrnm, &

iodi~em

cír–

cumvolvat. Id parírer przfl:are porens foho char–

la: feme! aqua falsa madcfall:a: : hoc en11n haber

folfedo '

lit

humorem in acre eicifienrem attrahar.

Unde qu:rcumque

aqu~

falsa feme! maducrnnt ,

nunquam ita perfeélc cxíiccann11, ut cc:elo, ve!

tant1fper pluv10 , itcrum bum1d1ratem non c:on–

rrahanr. Alto modo idem pra:fl:ab1s,Spongiam A,

ll!l1lll1lll1lllllllOOM¡¡;¡¡.¡¡;¡¡(ll;,ll!lllüo:¡¡Oll~.m¡flillli:11!ell'l.!OO

P RO P O S IT l O

X X l V.

Problema.

v.Eol•pile.

Fíat ex marecíil. folida ,

lit

a:re, ferro, globus

in cujus exrremirate lit collum breve ,

&

fora–

men cxiguum; implcatur dimidia parre aqua,

&

prunis fobjiciarnr , ita ur vebememer incalefcac,

aqua in ventum mmabitur, ita ur vencus fatis v:i.–

lidus , nonnunquam per horam integram fentia–

cur. Si col,lum focrit

ll.ex~

ofum

, fpiritus egre–

diens , ita illí.!emr ,

ut

maxímum fonum edat ;

ii

foraminí fifl:ulam, am quodcumque aliud inll:ru–

mcntum apcaveris, fonwm fifl:ula: audíes. Efl: ta–

men difliculras in immicrenda aqua, quare ad la–

tera nonnulli claviculaoo ,

&

infund1bnll1m ad–

dunt : fed per ÍOf'mcn imnmti porefi multum

aqux.

Si

cnim calefiar valide torns globus ,

&

in

aqwam frigidam

ira immirarnr

ut

foramen im–

mergarur ,

aeí

frigef.tll:us , dum fe ad minorem

locum occupandum coarll:abit mulram aqua1h

attrahet.

m¡,~!lf1'll:i!ll/l~!l{l~1l8!íllllllrn:lllll!l1l,1.\lll)'.¡:@l;i!l~i!1!l!7J

P R O P O S 1T I O X X V.

Problema.

Fon1irnlr11 per comprcf!ionem

ú'1ió.

Sir fphxra qu,.,cumque AB, qua: media parte

impleatur aqua, per claviculam

E

immittatut

~

·_

~

n

(

:F

~"''}-- G

:s

= _

¿

fyrio>, rnm Í•p>'ui<

,;.¡,,.~:~:"'"',

•d

aqua, parnm 1me1dl: , obversa íingubs vi.c1bus

@

T

clavícula

E.

Q;_1od alio ccbm modo fieri porfer,

li

nempe anthlia Spha:ra: AB, affario infl:rulhe apra-

rccur ; facili11s enim acr,

&

aqua imra Sphreram

violcmcr immicrccccur.

Po!tquam

fofficienter

aqure ,

&

aeds immiferis , íi clausa clav1cula

E,

aqua folsi feme! impra:gna; ctiamíi exíiccecur ,

cempore pluvio fiet gravior ; un?e íi in bilance

appcndarur,

&

ex alia parte pondus

fer/:

requalc,

icem lanci fitum globis infl:r11ll:um anncll:as ; quo

erit humidíor ncr, eo magis dcfcendet fpongia A;

paucioreíque globi fubjeéta: menfre iníidebunr.

Ari!l:a iccm avcnre, utpote in helicis modum

conrorra,admínimum humoris attall:um vari/: de–

torque~ur:

Unde

fi

illi

leviffimum indiccm appo–

nas, cm c1rculum in gradus divifum fobjicias , ve!

miuimam índicabit aeris murationem. Sed ifl:a

non fonr proprie hujus loci.

aper~cris

clavicnlaro A , acr majorem qu:rrcns

locum, aquam cxpellec,

&

folienceru cllicier.

H

1'

amem fonticulus , vix per quadranrem

iocegru~,

aquam cjicict: d.eberqnc rantum adbiberi in ludG

cris aliqnibus, ut in conviviis, aur rheatris..Vr

1

quis Naiadem reprreíenrare veller, eius capm co–

rona imponi porfet , qua: luaro epíaomio,

aqu~~

in almm

ejicer~r.

Paritcr íi quis

Nepw~uru&c:cr

1

;

beret, porfet cndentcm vacuum ,

&

aqu

'

!'

comprdfo implere : ira in aliis mulC1s excmp 15

h~jufmodi

principio nrendum cft..

.

.

Non efl: neceffe du;;bus cbv1cu.1ts. machmam

infl:rnere , poffcc enim fyrinx

im~1tt~

per cana–

bn E.

lmmo line fyringe, li qms v1olenter

~er

canalem

A

infuHlcr, fpiriwmqoe idemtidein v10-

V

ij

lcmei