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I Great and Small Circles.
II Spherical Triangles.
III Spherical Geometry.
IV Relations between the Trigonometrical Functions of the Sides.
and the Angles of a Spherical Triangle.
V Solution of Right-angled Triangles.
VI Solution of Oblique-Angled Triangles.
VII Circumscribed and Inscribed Circles.
VIII Area of a Spherical Triangle. Spherical Excess.
IX On certain approximate Formulæ.
X Geodetical Operations.
XI On small variations in the parts of a Spherical Triangle.
XII On the connexion of Formulæ in Plane and Spherical Trigonom.
etry.
XIII Polyhedrons.
XIV Arcs drawn to fixed points on the Surface of a Sphere.
XV Miscellaneous Propositions.
XVI Numerical Solution of Spherical Triangles