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# Title: Lexicon Technicum: Or, An Universal English Dictionary Of Arts And Sciences (shelfmarks Leibn. Marg. 71; ZEN Leibn. Marg. 71)
# Folio - , page id 806933011:0518
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M E P
P R OBL F M L
Ehe Difserencems Longirudem and Distance os emo (The Distance verveen emo Places in ibo fame a
Places in ché same Latitude, beine siven, 10 find
the Laritude.
Example.
Iuo Strips in the Equator 400 Miles From
one another; one Cails Norrti, the other South à
like Distances, rill cher are 150 Miles alundex
Whar Lacirude are ther in d
Proportion.
Disser. Lons.: Radius:: Distance: S. Latir.
400. 5. 90001: : 1501: 5. 22201
Oxeracion by che Locarichms.
FOrhe AF. C0. L05. DiR. LOn5, 400---7. 39794 Sum =L05. Dist. LOn8. 2600 Miles,  3. 41797
Add Logarich. of the Distance 150-- --2, 17600
Sum = S. Lacitude - 670 59-.-- 9, 57394
By Guners Scale.
THC FXteNE Crom Disfer. LonS. 400 J on Fine ol
Forhe
Distance 1505 Numbers
Reaches From S. Radius 9000z on Line 0
F0S. Compleat Lacirude 67 598 Sines.
PR OBL F M XII.
The Difference os Longitude berween tuo Places of
che same Lacieude, beins siven: X0 sind cheit
Distance.
Example.
The Distance Between Marcinico, uid Cape
Verde, is required.
FxOMm 54501
Marin. 2 L. 1850
C. Verde. P Norrh.
Rem. = 43 20 = 2600 Miles =DiAer. LOnS.
Radius: Dir. LOng. :: S. Latir.: Distance.
Operation by ihe Locarichms.
F0LoZ. Disser. Longimude 2600-- 3. 4149
Add the S. Latitude 14 50-..- 9, 9152E
Sum - Rac. = L08. Distancc 2513-- 2. 40025
By Cunters Scale.
THC EXtenE tom S. Rad. 900012 On Line ot
Tothe S. Con. Lacitude 75 105 Sines.
Reaches from Disser. Longir. 2600C On Line 0
Toche Distance
25135 LlumiberS.
TocheDifference ot Longitude 2600 l. Numbers.
T0 2600] =4320==DisT. Lon5. in D. and M.
Ada 60
LF 30. =Lon8. OF C ape Verde.
LMacee Meridian Linc in Mereator S Chart, 15
2 Scale ot Logarichmick Tangents oE, che halF
rallet siven: Required, Fo find the Difference
os Lonsitude. sus eeshot est 
Exampt
Saitire From Cape Verde, in Laricude L4 50
Norch, 10 an IMand 25F3 Miles Wes: Pdemand
he Lonsirude oF rhe Iand. - 3H 25 SLISIB
S. Fat: Distance:: Racius c Dilr. Lono
5. 7510: 2513:: 5. 90001: 2600 Niles
07 essibeS3
Operation by the Locarichims.  112 2vot
F0ar. C0. S. Latitude 14 50
CA5I. YA
-OF47
Add L.08. OF ihe Distance 25+3-  len 3. 40025
es
By Cuntexs Scale.
THE EXE From S. Compl. Lat. 75.F0 ZOn Line oB
Foche dine of ihe Radius 9000 1 Sines.
Reaches From S. HLaCC2513 (OA L IIIC,6
che Thip 15, IR. ∞ sagis
Sum = 54. 50 = Coneirude ol che Place
Complements of the Laritude: Theincompara-
bIc MC. Halles demonAtrales chus. 10 quiuli 3st
Supposing P ce Pole
BD che Equinoctial.
eC, Pc, (90. Co- Latitudes
Bcci C P a Rhumb L ine.
1. The Lines PB, PC, PC, P C, areche Tan
Genrs ot hale che Co Farirudes in he Stereorra
phicke Projection, (bY Prob. 1. in Spherick Proje
ction.)
2. TheDiserence os Longirudes, er Aneles qu
chePole (BPC, 53c.) bereen Them, arc l08an
richuns of the Rationes oF chole. L’angents onc u
anocher, (by the KnoWn ProperEy OL Proportionat
det ald.) Buc che Wauricat Meridian Line, is me
orhex