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St QJJ.F.Q^S.

D 1 S $ E ATlGNOO MONICA

HOR OLO G IO

SCIATHER1CO.

Qjam

Cum Ampltffimi C&Ueßi Hdofophici confenfu, in Kegia

& celeberrimaAcaämta Fpfahenji,

PRIS I DB

Vl\ö rt^MCL 4S S IM 0'

M A GNO C ELS I O,

Mathef Profeflore Ord inarso, h. t.RcÄore Magnifico,

PublicobenorumexamtniJubmittit,

Celfpßmi ^egnl Svecix CanceÜar'ti

Alumnat

ANDREAS ING, RHODIJN w-Gtthus.

In Audit. Guß. Majorif bons confveris,

v dte i, Jmuar. Anm 167j.

(2)

S.» E.« M.t"

KE G N 1 E S V E C IQV M

S E N A T O R I

ÉT

C A N C E L L Ä R J O M A G NO.

WESTRQGOTHIiE & DALIA

I U DI C I O V IN CtR 1 A LI

ACADEMlA UPSALIENS1S CANGFLLARIO.

QELS1SS1M0 EXCELLE

HE\0 l ac DOM IN 0

DE LA G ARDIE

Conifti Sn £3cföi?/2trcn66urg&pmiott/ L. B.ia

<£f£o(m/Domino in fyatfbt/ $?C?pi!éfofy

p& Qöcimcpiu '

&C* &C*.

3omno ßao Grauoßsßm

(3)

Celfisfime , Comts GraDomine.

Ncomparabilis tua gratia , CdjtJJi- JUme Comcs, & favör in Jitterarum a-

mantes eximius,tojam vei teroerita-

tis velconfidcnti# quemvis perduxe"

■runt, ut Cdfifftmo Tuo notnint ftu-

diorumfuorumctiamaliqualia ipecimina inlcribere

nemoferedubitet. Ideoque Tuis oculis tepiusquae

iisiodigniffima funt, obtruduntur. Scioeqoidem

Tibi, Cd(iffint Comes, meosquoq ;aufus vifumill

tiimios 8c prorfusinlolentes,quod tant*vultus ma- jeftati,cujus afpe&um vixfummiiogenii nedom vul¬

garisaÜcujusvires fuftinent, hafce maxime rüdes 0*

ftere pagcllas nonfimvcntus.Proptereadiuquidern

mirumqoantum diffidebam! verueademmihi gratia

animumaddidit, quae eazteris Tuis Ciienribusfin-

gulistSvafitillafavonsauraadomnem pofleritatcm

memorabilis, quanos terrae Leckovian* incolaso-

mnes, ante alios, perpetuoes dignamscompledH.

Quaeid effecitjUt qootiescunq,in regionemnoftra

Oivina curaTe,Cdfiß Comts, venirejuflerit, non faciledixerimquam incredibilitumomnes gaudio

exultent. Atque de gratia ac benignitatc Herois ac

Dominiloi fecuri,totdemiffiffimisfupplicationilus,

totmoleftiffimis precibus,invidamTuam patientia

onerare non dubitant,adeoutmirariIiceat,quemad-

xaodumiildem femper fufficere valeat. Adegit mc

(°J porro

(4)

porroMunificentiaTua, Cclfißime Comes,sctcrni»

Jaadib9celebranda,dequa totapromc Patria,edaga

exteraenationesloquunmr; Cujusuberrimi ftudas

admeqaoq; &fracres meos femper copiofe redan-

darunt ; pratcipuevcro cumex innatoerga Suppli*

cesaffe&u,& Summain Pareotem irieuragrada, pri-

mumnoftrumad Åcademiamiterreddidetisingen-

ti pecuniafcliciffimuni, ut & paulopoåannuiscu*

juldam pracdii reditibus nos benigniffimejuvare vo-

lueris.H^c dumcogitabam, fierinoo potuit,quin a-

nimusmcus dcfperationiobluétaös, lefe erigcret,8c

dcingcnti Tua, Celßßime Comes, gratia, optima

qu^que fibi poiliceretur. Sed nec quo potiffimum

modo Tibi, CelßsßmeComes »rationemprofe&uum

meorumprobatem potuividerc,nifihoc gtatiffirnae

humilimaequementisindicium adTuagenua-piede-

mitterem* Sufcipias igirur,C'elfiffimcComest eodem

quo me ha&enusfavoreamplexuses, primum hoc

deftodiis meisteftimoni-um ; Scinpöfterumquoque

fummxTuxgratis scbeoignitatisfrudumcexciderenepa-

tiaris, devoti-mma annmveneratioii^oro. Dens Ter Opt,

Max. Te,, Cel(ffftme Com»f, tBsxirao patriae noftrar , Rei

literaria: Tuacquc Göthiat,bono,quam düiciffime fervet!:

Sic vovet

Celßsfmi Comitis

humiUmus fuhjeUtßtmwqu*

Chens

ANDREAS RHODIJN»

/

(5)

T F A T I O,

\ iiß'' ' '"n.. *

INccr

ria funt, haud fä

ea qux honiini

o an

incommuni

non accurata

vitamaxime

temporum

necefla-

diftri-

buendorum ratio, -locum, li nonprimum certe, non

proculaprimo, fibi verfdicet. Cum Deus in initiofta-

timmundi, ante temporis confticuerit difcrimen , quam

Soicm, Stellas, cartcraqueomnia crcavit: quippe quifuc-

ceffivam operis fui perfeäioncm Rice primxva determi¬

naret, Et ficut ipfb temporis auäor åc moderatorfumnuis»

ad ordinem creationis fuxdefignandum , eertosdiesnsces-

fars© requirebat,• ita etiam maximum operx pretiumfem-

per fair, in focietate humana res om nes negotiaqoe lin-

gula, ccrtis dicbus ac ftatis cemporum viribus, pefägere.

Proprerea rcodos, dicrum in certa horarum fpatia divi¬

dendomm , varios excogitarunt prifci. Nonsiullos in 12

horas Diera civilem diftinxiffe cenftat: alios in 24, (quem

numerum eciamnum retment om nes ) fii?e ex duodecim fignis fignifcri, quorum cuslibetunam horam adögnabant,

Öve ex aoimäli qnodam in /Egypto Serapi h. Soli fa-

cro, quod duodccies de die totiesque de qualibet no&c

( ilthonos auribus ) urinam emittcret; adeoque originem

vocabuli Hors ab his fordibus ranquam agrxeo '1^3*h, c.

urina, quidam dudamvelint. Inftrumentavero borisdefi-

fsiersdis idoneanoouniulmodi funt: Notumenim eil olim clepfydras,bodieq; Clepfamosfeuvitrautolisn peråqiiamj

ita noftro tempore perpulveremfenfim deTrendenrem,ho¬

tasoßendentia, inulu elfe, mukaque alla diverfi geberii

horolo-

(6)

horologia/ qua:Anaximeni cuidain Müefio äcceptä rcfc*

funrur, fcdfalfo ; Nam Achabum Iongeante, horologiuni

habuifle teftantur Sacra?litters. Quin & ipfum Adamumi tanCumphilofophum, Matheteos adco ignarum fuifle, us eadem nequiveritinvenirc> non fascd crcdere, Prxfertim

Cumuiuseorum tamilt, vcl in minimis negotiis,neceflarius,

utctiambubulci oviumquepaftorcs in fylviserfaßtes, crc- fccntem & dccrelcentcm(uorumcorporum umbram, loco Horologii habere(icnotiflimum^Nonopusjam eft, opinor,

utindeprsdicanda ejusréilaude ac utilitatealiquid follicite

allaboremus, cujus fufficiens nobistcftimoniuin ccrtiflima

fe fiftic expericncia. Paucistantum hkindicandaeft nietho«

dus diflertacionisnoftrx jin quaprimum nonnihil deHoro- fogioingenereegimus, Deinde Problemata quatdam in i-

pfaconftraéHone neccffaria , tradidimus. Tertio Examen planorum, Tumdireftionem llyli monhraviraus. Poflrcmof

deIineishorariisaliqua addidimus. Fateor equidem Prx-

clariifimumPrxlidem meuni, ficut nemini unquam deefic

fuftinetinftudiis Machematicis,(quxanimumqooqjmeum, pefcio qvofuieeperint deßderio) ita&nunctenuitatimex adverfusmaterix hujusdiificultatem oblu&anti, Sc operam fuamcommodafleSc fubfidia. Tuumeft, LedorBcnivoIe*

cainquibuierratum (Je,nec cxfpedationituz fatisfa&um #

e</rigere candideque excufarc.

y

Caj.L

(7)

Ca?. %

Km

neratim_,.

Örolofjum ab iadicaodis hont diciliif«

Hordeftumeoimeft mftrumeatumeerti»

lineisIn qualibet («perficic adorn-tum

pr#cipuead boras , perradium lucidum

auftmbroisvfne.Gnomoaeprofeélutrude-

monihanda*. Ratio»pfa lorolcgad«-

§|fcribeudit Hordoziogroiibto,* AaGno-

monc,tjuiaf&s , hoccd inda«

,gator vmb'z dicttuf, GnotftonUu dt

Stiatberiea apptllari iolcr,

Horsrum geriet*funtduoiMqualium&hiaqualium^enTHtn*

tiorum & veterum.

J{etentiores hor*funtpartetquatuorfcv'ginti«pqt'ales, inqt;af

diftingvjfwr qttisquedies civilis»;iudt&x,quodnoneffént vetei.bu*

iifi!civi'j reerp**. , t .

Hse autemprotriplici»nirio,iirde computarifolent,variantjdi-

veriamque denominacionetnforti unrur.

Ali* enitnfunt Aßrewmicar, pletisqjpopulisEuropeisfcoctem¬

pore ,praseipueveroAHronom's funtinufti; hoctarnendiftnmine»

«it Aßronon ihorasa»ner»dierumeienrf ieriecontimiaadhoram 14

inmeridietr«(equentfm : C*teri veroamrridieinmedianino&ca»

horasdsodec'tn»atq eeodemmodoirde«*tiam ninmeridiem.

Ali«haltet» i«tintnuriimpopulovt* ipat*,q«taböccafufolis»

in or.caf«trfjii< letp entrm,OrdineconinserruptO« <.on>ptitan'ur«

Ali* Bßbyiomite, jtiitaB^bviouiorunacoalvaudincm»t umera**

diinitiniiicapfeiifes«bot IiSollt.

Antiqu*boretiqtiar umfreqiientior«fu*eratapndarr'quos$fint

doodenma parecdieiatit 1cctis>fg latm zInäqualesdrä*, qtiod

correpnoj.es A incren.cni«lorgit diriscaj--km provari*inticmcn-

(oAdimmutionclungitudiuisdienn. &Lo&ium.

A C»W*

(8)

Cxtihm Horolo^iumquocfÜber ex fribufcocnponicurpartibai

aemptSuperfiao alirjua, GnomoneSchneie* Quibus qujrco mit

pfoufuaccedatradtwncccffcefi-

Superficiesvclplana,valSpheeriea,veiConiea, vei Cvlindra*

§ea$ veiexbisquoeuuquemodoruixta,

flauerum totcon&iciüfolenrgenera.quoc funtcirciiiorumSph».

r*coclcltis. quibusasqüidiftawtrdiferimina. Kirchertts fituspiano-

rom49«unaerat,hb.ivi.part.i.c.f.artnoagn. kicis& nmbr«.

Horizontale eßquodjacet in Horizontis «quihbrio. Horton*

fäle detlinans dicitur> quodaximeridiani, perpun&aSeptennio-

nis& Außritranseuati» ineuabeas declinat verfnsorcum aut occa#

film.

Horizontale inelinanr eil, quod ineumbensaxKvertical ispr«ma-

rii,inpunds otientij de oecidencis cerminaro,,verfus. borearn vei

•ußrumiudinat.

Vertualtprimärtum eft quod venicali priroario : Dechnanr quodfecundarioasquidsiUr.

permifeetardccliaatio atque ineßhatio planorum.a inSaitiskre.

»odis.

Verumquoniam nullumobvenic planum, quombdocunque col-

lucatumquod Horizont*cuipiara vei exaäo vei dedinanri nonfir

parallelum , oranemhanc plar>orumvarietacem ad duasciafleS retfb- cabimus *utplanum quodcnnqueoblatuisSr vei Horizontale dirV 8um, veiab eoverfusortumveieteafum dcihnatum*

Omniavcrticaliaplana primaria dt fecundaria, funt Horizont«-.

1iadire&a Scdedinantiuiispopulist qnibus pol?s taniutidemeleva«

«urkpraborizonrem.qnanrumpoks fupraplanumverticalepropo«

ütunaatrollitur.h.e.,planum veriicalccerti loci eft Horizontale fub elevarionepoli» q.uaeeßelevation*«quatorit loci propofiti squaü«•*

E. G. Planum vcrticalelubelevationc poli6o gr. c$horizontaleubi

•Itieudopob eßgr. ja

Omnia plana indinata funt Horizontaliailli«,quorum altitndo poli arquac alcirudinem pul*fupraplanum darum. E.G.Subeleva«»

lionepoli6ogr. dechnerplanumadaußrun» jo.bésjgiturde6*dem?

prisrelinqnituf elevatio poli ejus Uwi ubiidem piauumeß Hori«

as®atale>

Oamio

(9)

0®map1ana<!fc!inarit'*&YncÜnsmia fimil, funt tfcrfzoetafrå

^eclinantianjihlocis,ubi tantael! elevatiopoli» qtianra «ftaltiru»

dopolifupraUream leptentrionisA auftri,feu mcndianam*

> Plana Horizontalta, jttxtatriph'cem Sph*r#pofitioneaa, tti#

pb'cia funr: Re&a,oblique A Parallele. Hiccparallel«, illa ob- liqua?, ift*re&*Sphairjecooforrotafunt

Plana Horizontal!* Spha?rs rc6tx$ dici confvevere Polaris,

qtiod axi terrenoinnitantur.

PlanaveroSphscra-parallel«,aquinoRtßlia, ob parallclifmoirOb quarorir,nußcupantür. Notandnmautenfplanum qnod haue Sphae*

verticaleeft, illi «dehorizontale,Aviceverfa. JDe cxteris planis

f;oloco agereconvenir.

Ex hisalia funtFtxa9qu*de locoinfocum commode transferri

neqneunt. Alia Mobilia, viaroribits maxiroe infervientia. '>

Hujns geoerisaliaiterumTniverfalia, qw« omnibus loci«acc6»

roodaripoflTuntt a\hparüculatia, qtiorniu ufuife ad prucos dun*

«axatgraduselevationis polaris, e^tenuir.

MttramHorologtipartem Gffomcaconflituit, quem alias indi*

9em, veratum A Stylum appeUant: nonnullis etiam Vmbiluut

jiominatur; quarcvisnoneademomninoefle utriusque ratio videa#

lur. Cuna Gnomoms munin fit axem terrenurnj Vmbthci. cc*.

tumiaaxeillopun&um ( quod ttrramreferat) reprafentare.

Tertiapars abfolvitur Iwtk. H* autem non nnitifmodi funr* Quadamenirntragis, q? »dumminusfunt aeceflariae. Maxbrene*

ceflari* funt lineacborar»*, cux variantpro horarum, qua« modo

deftripfimtis diverfitare. Cumbor« Afircnomicacaliailinea*, abas

Italic«,alias Babvl iik*,ah*sdenuqueprifes!fen ftidaicaereqoirant.

Priorisgenen*f nr tommtinesfedfcofes planor um A cirtulorum

cceleftium, qu> S; hfrsmm *4partes scqualesdividunt, feinviceta

Klpolisejus interfecanteå. , v ^

Sequenriiim duorüm linex sproje&iofteffuflt circulorum,quip§»

ralltlos (ol.sfingulosin 14 partesxqualesdifiingvtint t non autea>fe

inpolisinrerfe».ant.

Quarti generis.paralb-los quidein Soi$ inpartet24 difprfitmf

verunaitautarc*isdiumi(egmenfaduodetiiMflöt atqaea»

■toi«nodurni partesiudem fint «qua!es,

A 3, Refi*

(10)

iabor«iög»sdefcrifei foteat,magis adoomm»

4f«a<«adtiecciütat««ficiunc» cxceptucircalisaltitudrnuminhora»

riiipendulif,

Hfceomnihii*<ju*rtoloci aceedit Jtyiiut, quieft inftaranimar

liöroI©gii#(inequa«öEtuu»omniaoeft, &nulliusuftis».

RadiiinGnonioaicistriplex projedioconfideranir, fyBa, J(tf

flexa Sc Kjfrtåa:qu*tfiumGnomoniees partium ©ripinemfacit-

Primam SciatbtrttamappeHacmrs, quod horarmn ddenmina, perradiumpotiffimumluubrofum,oftender«dbceat.

Alteram Catef)tricam-y: quae.quod prior per umbram efScit, im Superficiebusluceilluftfatis,hocperradium refLeium» inloci«ra¬

dios lucirfxcliideniibus,miroartificioabfokit.

Tertia.Anaclaßica nomicatur , cujusnrumuseil Börologiacon#

Cta^are»in Superficiebusaquaalioveliquore inrmfriis, ^

Nosde Horologiis primigeneris agere conftituimus, prmcipig partinabAflrtnomtt,partimab Opticü, partim etiam£Geometrt*

«uutu antes.

AbAßrcnomia circulbrura Sphair*cognirioreqnsritur : Ab 0.

ftitii radiorum lucis atque uinbr* natura: AGtsmetrw Probte#

enataßneqtiibus cOQilruöio.&iicsrerespedirinequir» (Jude ufuire«

q^icntiprainCaputfequens ooniecirr.uf.

Toßulata.

Pifbmtiameentriterrxa fuperfi-

cie reipe&u coeJipr©nihilo effr»:>J

Gnomonemteerx axern referre.

Apieem ftyli reputari pro centro

terra.

cdxwma,,

eftlöttts l'nc»horarii, ubi cirtuli horarii lUnilOB, iup*t r'C"m

©BtMBBaiMU,uteri««.. Caf.1I-

(11)

Cap, IJ.

contiilens.

^Orum HorolbgjiSciatliericaäidornandiiiPgotiunj.in tribut

pr*cipuevertitur. Primum eft examenplknerum: Altec

rumdireftioStyl>:Terrium linearüberariarumdelineatie.

Qu*omniaucriteetpediri queant, problemata quacdam,quorum

mfus häcmaiimerequirmir» pratroirremus»

Per duo pundta inter fe parura

diflantia, lineara longiorem üne er-

rore traducere_».

Siar oundaraodicoafeinvicemintervallo remott A Sc B. p«f

quxfjnedéviatJOfleduceadafitlinealongior C D- t pua&o alters

«tro tasiqna ce»'

tro per pun&tisst

alterus«d»friba»

turarcus EF,ex quo, circiao in»

a! erumpu tidura tranilato»abfcitt*

dant »r titrinpüt

paret«q«a!es*inpun&is B & B. Deind? iifdemp»mftis,fiant'

Kinct »d«rranromtervalloarctitv ut<"e commode decufTare poffintj

p?tain C Sc D D«'dS perH«ceadempunda C A Dlinet critm-

per fin*: Cht* 4r Mrob I. i.

rrekl.IX.

(12)

Trobl. 11.

.f ■, . -.

Lineam propofitam bipartitole-

care.vel quaravis ab ea parcemab- fcinderc_j.

TlOccommodilEm-cfieri pottft beoefici©Scaliemamtalfsin fooaut

**1000partesdivil*, qu*duplice«? plerumqi habere feletdivifio-

nem: unarnmajeremabuna} alreram dimidio minorem ab alfera extremitaceprogredieote-m, Huicregulx lmea propofiraapplicata»

fiqiiot partesSeal« majoriscontinet, rot etiam circino de minore

©cceperis, dmdeturhac circinid'.duöione linea, di&o citius, iti duas partes»qnales. Si vero partiumiftarom,quasfcaladettrooinat, dmufitim,trientem»quadramemfkc.cfcalacircinoacceptism , ac*

cotnmodaveris lineae dat«, panemabea»quamvoluifti, abfeindas.

Ex.gr« Lineacontinet partes Scalae i10, harttm dmnidium , partes

»eprpe 60.circinoaecept»,dimidiumline». 40 partes trientem, ,q

quadrantemefficient,

Si partesmillefimasoportetdeliaeapropofira refccare; fic©pe-*

rarilicebit. Referat lmea A 13 longirudinem Seal» , B C lineana

dividendamijfiqua partesmdlefimr de»erm*nande funt Séf. Pst'

tesiflseefcalaacceptae,tremferswmsrinLnesiw A B» nöe A in

F. Hinepofirocircinoin B, dncatnrf intetvallo lire» dividend»

BCiMCut-jqucKtangatdu&aobfWaA CHincpoßtonnopedé tit*

Cini

(13)

£intinE, extendaturalternf praccife fangat lineasn ÅC. Interval*

lura faoc ejreini in lincamdividendam åpund©BinD translatura»

partesabea$6$abfcindir. ;

Siveroaliaspartes q samcentafltaasaut millcfimas noyifle expe®

diat, v.gr.fcpteßidecim* quint«, defersbaturarcusnan abextre»

tniratcline* AB , fedaparce tf aut 150» altervcro a parte7 fet

70 In prsnaoremarcom(i ftatuaturlineadividenda , determinabit li-

oeaoMcuraAF, inreliquoarcu, partes defideratas»

'Probl.

11L

AdafTumptumin re61a linea pnn- 61;um , perpendiculum ducere feu, quod idem eft , angulutn re£tum

conilitnere_,.

T Inea qiiccunque uc A B dividaturcircisn in partes quinque ,ef

a4cjrsdaoaccept«partes tres » transferanrur in bneam datam å-.

pwnito C in D. Deindepartiumquatuorintcxvallo# eipun&%G

A

A

dekribaturarensB. Hincaceeptaquinque partiumdi'lantia , ex fa arensprioremfecaasinK, & perpUN&ttm feüionis dielinear«

B C« cpm cuja priore CD sacludit angulum rectum* td pun«

&*a C. ' " ~ '

viliw*

(14)

> * ^ 8

tsfiit/t, Tatenrallö i©oopartiumefcataacepto,dcfcribarorperi*

pheri**rcus, cni fubtenfa 1414partium,abeademScala »applica» v

va* are umdeterminat, qui quadrans eftcirculir*cproptereaanguli

rellitntnfura. .

•s4liter.Exptrnåoaftimpto Finlinea F G, quocunqueinterval-

fodefcribaturarens»ut H I, euiappiliceturlinea radioFH xquali;,

ab H in 1 duda H Lprotrabatur tantundem ab I in K. tandem

ex KinF deleendat lineaK F#prioripérptndicularil adF.

Nota:fipun&umnoudatur in ipfalineaFG#fedeitraram ut in

K , agendaeft linea perK, in li.bjfétam oblique tncidens ,nr in

H. H«cbipartito(ecandaibl. Pofitodeindecircino ia1, intervd«

lo lK»noreturin&ata1ineapnn&ninF#qu©cutn jtmgarurpuntiüK#

Briwtcrhocéfficinir norhna, vel, ß haredeßt,iemicirculo,quem Transporratoremnominsnthoc mod©: Inftrwirenrumira applic«-

tiirllnexdarx , utlinea nonageßmi grsdus illt exaäe copgrnat»

Quo faåo »lsneafecund»na1 nllrumentidiametrumduäa, critprko*

»iuerpénditularis# tonüituetquecumeaangulwi) redum»

Trobl. IV.

Ex terminislinejeredse,aliasdu- .

as educere,angulum redum inclu-

dentes.

J .infamdatan» AB bifariam P*rtire in C, elquocircmuiad in¬

tervallum AC did uftut, alt«*

ro pedc «bivii deugnat pun*

du,utB#perqtiod dud«linear

adextreituiråtes lineae data an-

gutiu redarn comprchea- j\{/ C

Seat*

ErohlV.

Super data reda linea A B.qua-

d.atum

(15)

dratum vel parallelogramum re- chngulum ABCD, conitituere_».

f^Qndmitoper probh3afiguloreöo» ad Å. Ex B Si C,intervallif

Ä B Sc A Carcuiimdeculfationemdefjgnajadqua®oppofiu lai«3;

rafuncducenda. Vel fi pUcet, opcrsri

licebit adhuloc raodum. Po(ito pade

circiniinextremkaribitspropoiksImeas

AB,defcribantur eodem in-rcrvallode-

cuffirnarcus, Sc permtcrfe&lonem p*

nim E,a^aorur 1t pwnfiish Sc Bline* '• *

AE Sc BE) qu«, eircino pafito 10Ea

revolvanturin C Sc D, unde perpendi-

cula ducanrurin \ Sc. B. i'riquib'usqua- 4

dratiaurrcdacguli lateraad arbitrium

dsterroiaaripottum.

'Probl. VI,

Qdadrantem circuli AC in fex

partes dividere_j.

Eadem circinididu&ione,quadefcriptus quadrans Å C»f^Å

EatpriTiofedio inL»&are9 Dncem- C

quefiatfedioin M.Scarcuspriorefe-

sans hi D »tuncdudaB dividit

arc«m M Lbifariam in E : qua di»

fifsotransferatur etiara in K &N.

Nota,Eadetnqne ratiorse, ubires pokular» divid.itur femicircaluspri-

raoin Cr%, & dtiade m duodesiv»

partas cquales,

B Troll.

(16)

Ad datuminreda linea AB potv dum A, angulumquemvis efficcre v

fen peripheriam in quotlibet partes

^ -^1— —<* V*

"C Scalaloovel1000partesacceptastransfer in1neam AB..Per B.

veroeducator perpendicnlarisBC.iin quamfim»IiterefeademSca#

!atransfertangentemanguli defiderati. quam _ (\

determmat Canon Smuum , urporeaBinC.

Quo fa&o , per A dt C dti&a linea, cum prierc includit angulum quem defcriberefta#

tuifti. Memintrisautemtotnotasde tangemi*

BusinCanoneampurandaselfe, quotZiphrat» /

»nradio iooooa»partium, omiferis. l\sL—

Aliter. Idetn erpedittirper fubtenfas,Hoepa&o: Cum[ubtcnjd fit «ercur dimnhi [mus duplus ,,

dimidium anguli petiri ,, inveftigetur

finns , quem fi dupl»caveris hab*~

bis (ubrenfam; Hane e (cala defum-

pfam Circino , applica peripher»« ad

intervallum iooo partium e Scala de*

fcripta* Quoniam arcus BCquemcir-

cinusperipheria abfeindit,s angulum. Å*

dctcrminat« quem oportuit noviife.

Stylum ad angulum quemlibet

no impingcrcj,

r. Sit

(17)

1. Sit Gnomenpianoadperpendiculum i

tannuamcentro,adquamcunqtiedilti,

damdeftribaturperij beriacrrculi:ra#

dioque AB hat adlongirudineraityli

parpendicularis A C. Quo fa<3o,rao*

featnrhitierndepianoimpofmisItylus»

urdiduäiifadintervallum BC circr#

out « e qnoirbetcitcumferentiacdud«

punåo » ap>c«m ßyli tarvat. Quod

tibifierivides , Stylum piano ad an#

gulos redtos infißere exploratum ha#

ibcbüs. Ll*u Gnom. 1* 4. prop,12«

ut, Eloctlpthii C

%,Si *eroSryhta angulnmcum platio

pratparerniad amplitwdmemanguüpe*

titi, incunei«oiu.n, angultis bgneus

A B C. Hl« loc© Styli appbcatuj

inclitKitionem jitita quam piano Sty*

lus iaotmbcr*debet,determmabit.

efficeredebeat dblfqmtm% C

fcegiones mundi, utpote Meri-

diem, Septentrionem, ortum &oc-

cafum, exploratas habere.

B %

(18)

TM tabula plana in aprico<& paceaie taco ad libellam collocata,du

•"■cino ducanuir arens aliquot parallell > mque centro coirimujti

circulor m Acollo.euiradper*

pendsculum Ghomoa » cu.jus

ante Meriiiem obfervetur um- bra, quando di&oruiu aliquem

circ«l®runa terigerit,St Hgnetur

eontaftus pun -lo 13: pari mo¬

do obf-rvandapoffcmendiana i-

ftms Gnonaoivserefceusumbra,

& c«m eundem tetigerit circi-

canonsducfciim, iterum fignä-

da esrremitas utnbrxpnnéio C*

Ex faisduobuspannis dncantur

circiuo areas hine inde iavice deeudantes , per quoram de-

Cudationes & centrum tradu-

«e da etl linea % Mleridsei St Septentrioitis certif^mus indeiv

Han c Mer.dianam fi ad angulos redos deculTaverit aba, cardmem

illa de*tra orientalers» limitrå ©ccidenulem oflendet. Vitruy, 1. ix. c. 6-

(tsflia via non minus facili quam certå 3 qnovrt momento Jucente fole , per uuicam umbrat Gnomoms obfervationem , Azi«

mach dive dillanna Solis a ctrculo Meridiano , arqtie adeo Iinea

Ivleridiana baberi po ert i fciendum tarnen boras a merid e ul/ro cirroque remoriore» , ad hane operarionem magis effe idoneas ,

proprer Solaris alnmdinis 4 unde h«c res tota dependec > fubi»

taneaai immuiationern.

In piano a!iquo ad Horizonten arquilibri, corocefur ut prins-

ad perpendicuhim Gnomon, cujus äcturate notetur umb * lon«

girndo, fecundiim quam ducenda eft Imeaobktira, qiuro referet

sn Sthem&ce 1. AC

Åcc«-

(19)

Äcceptam deinde circin©, tum Gnomonis tum umbr» lon-

jjone} k ex apice Gnomonis B, tanquam ce-tro, peripheriarw

circu'idefcribe A O K H, qtiae referer Meridianum. A C Li¬

nea repr^fenra?umbran» obfervatam . e* cuju ex r^mirateC, fi per

centrum B ad peripherem ducarurradiusSolis C f, erit arensH I

eodemmomenroSolis alntndo H O exorimerHorizonrem ,/E Q, gfqninoélulem. LN erirparallelus . quemeo tempore S<d defcri«

bit competentedecliilationeSolisdeterminatus» ( irtulus IK Ho-

riz)nriparalleliis »peralrirndin^m I du^userrcirclns alritudtnis»

Arabib'-it AlmupantharatdiRus , locum Solis in Sphrra , »bi paral-

Irlum ein(dem L N f-ca."in M ,o^en'ens Quare diftantia Solisa Kflerid'ano, Azimnrh dj&a , erir M T, quam rte erprelferis ß et

centroP,intervalls f P, circd» m defcripferis TR K: dufta enim perpend'iculari MS, erit S in di&o circtilolocus uhi Sol tempore

facti: umbratconfiltiti Sc didanria Solisn Meridiano ftve Azimutk

$ I.

Proindefi circa AlocumSry! in pr'ma figtira , circnlum defcrie jpferisDB, circulo IRK in fecnda figura rqua^m fecanrem-

<%ue lineam umbcs A C ia D; Sc abfeideris arcuai DE, arcm S I

äqualem

References

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