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CONTENTS OF VOL. I.
BOOK I.
Theory of Geography-Of the Earth considered as a Celestial
Body, and in its Relations to other Celestial Bodies—Of Lati-
tudes and Longitudes, .
Astronomy excluded from this Treatise,
Proofs of the Rotundity of the Earth-Proofs drawn from
Angular Measures, Degrees, &c.-Zenith-Nadir-Vertical
Line,
Change of the Horizon,
Equator-Height of the Pole--Distances of places upon the
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Distances of places with regard to their Meridians, Definitions of Latitude and Longitude--Apparent Motions of the Sun,
Hypothesis of Copernicus-Real Motion of the Earth, .
Effects of the different positions of the Earth,
Position of the Earth at the Equinoxes--Astronomical Seasons, 17
Advantages of the Northern Hemisphere-The Zodiac-The
Twelve Signs, .
The Tropics-Polar Circles--Terrestrial Zones-Climates, 20
Antæci-Periæci-Heteroscii-Periscii-Amphiscii, Ascii, 21
The Right--Oblique, and Parallel Sphere,
Obliquity of the Ecliptic-Tropical Year,
Siderial Year-Mean Day-Siderial Day-Solar Day,'
Mean or Astronomical Time--Motions of the Moon-A Month,
Phases of the Moon-Eclipses of the Sun and Moon,
Longitude by the Eclipses of the Moon,
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27
Astronomical Almanacks-Longitudes by the Satellites of Jupiter, 28
Longitudes by the Eclipses of the Sun,
29
Longitude by the Occultation of the Stars,
Longitudes by Lunar Distances-Origin and Progress of this
nets,
Method,
Use of Chronometers,
Correction of Longitudes-Refraction-Parallaxes of the Pla-
Instruments,
Repeating Circle-Solar Tables-Calculation of the Latitude
by the Altitude of the Sun,
31
32
33
34
35
Continuation of the Theory of Geography-Dimensions of the
Globe determined—Its Oblate Figure-Basis of the New Metri-
cal System,
Principles of the Measurement of the Earth-Measures of the
Ancients, .
Gnomon of Erastosthenes-Measures of Snellius, Norwood, &c. 41
Picard's Measurement-Trigonometrical Operations,
Astronomical Operations-Dimensions of the Earth,
Experiment of the Pendulum,
Huyghen's Theory-Newton's Theory,
Investigations of M'Laurin, Clairaut, &c.—Inequality of the
Measurement carried on in Lapland and Peru-Different other
Measures,
These Measures compared by Trisi,
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54
Errors in those Measures-Measurement made in China,
Errors caused by Attraction,
Opinion concerning the irregularity of the Meridians-M. Klü-
gel's Hypothesis,
Measurement conducted by Delambre, Mechain, Biot, &c.
Results--Quantity of the Depression--Accords with Pheno-
mena,
New Measurement by the Swedish Astronomers-Accords with
the French Measure,
Depression of Jupiter-English Measures-Doubts,
Geographical Conclusions,
Whether the Ancients were acquainted with the Depression
of the Globe,
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BOOK III.
Continuation of the Theory of Geography-Of Terrestrial Globes
-Of their Construction and Principal Uses,
Description of the Artificial Globe,
Meridian and Anti-meridian--Longitude counted after the cus-
Common way of making Globes-Uses of the Globe--Distance
of Places,
70
Remarks on the Measure of Distances-Law of the Decrease
of the Degrees of Longitude,
Relation of Places to the Points of the Horizon,
Remark on these Calculations-Divers questions resolved by
the Globe-To find Geographical Positions,
79
To find the Points of the Rising and Setting of the Sun-To Measure Distances To Rectify the Globe,
Another Method to find the Length of the Day-New Con-
Continuation of the Theory of Geography-Of Geographical
Maps-Of the Stereographic, Orthographic, and Central
Projection,
Different sorts of Geographical Maps,
Developable Surfaces-Of Projections,
Laws of Orthographic Projection,
Laws of Stereographic Projection,
Three sorts of Stereographic Projections-Polar Projection-
Tracing of Meridians,
Tracing of the Parallels-Equatorial Projection or on a Meri-
dian-Tracing of the Meridians,
Tracing of Parallels-Horizontal Projection,
Tracing of the Meridians,
To trace the Meridians by Points-Tracing of Parallels,
Properties of the Stereographic Projection, .
Measure of Distances on a Stereographic Map,
Origin of the Stereographic Projection-Orthographic Pro-
jections,
Polar Projection-Equatorial,
Horizontal Projection and tracing of the Meridians,
Projection of the Parallels-Central Projection,
Properties of this Projection,
Faults of all the Projections-Modification proposed by Lahire
and Parent,
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99
. 100
. 101
. 102
103
BOOK V.
Continuation of the Theory of Geography-Of Geographic and
Hydrographic Maps by Conic and Cylindric Development-Of
Projections by Proportional Parts,
Simple Conic Projection,
Modifications of the Conic Projection,
Projection of De l'Isle de la Croyere-Method proposed by
. 105
106
. 107
. 108
. 110
Mercator's Projection, or reduced Maps-Tables of increas
ing Latitudes,
Proportional Projections-Projection of Lambert, .
Polar Projection-Equatorial Projection,
Alteration of this Projection-Projection of Cassini,
Properties of this Projection-Spindle of the Terrestrial
Globe,
BOOK VI.
Continuation of the Theory of Geography--Continuation and end
of the Theory of Geographical Maps-Of the choice and assem-
blage of details,
120
. 121
122
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124
126
Choice of Projections of the Scale,
Political and Physical Maps-Military Maps.
. 127