PROCEEDINGS

OF THE

EDINBURGH

MATHEMATICAL SOCIETY.

VOLUME XXIII.

SESSION 1904-1905.

WILLIAMS AND NORGATE,

14 HENRIETTA STREET, COVENT GARDEN, LONDON.

1905.

PRINTED BY

JOHN LINDSAY, LAWNMARKET, EDINBURGH.

120443

TIBBYBA

FOIMUL ORCHMATRONA DU

INDEX.

BROMWICH, T. J. I'A.

The Ambiguous Cases in the Solution of Spherical
Triangles,

BROWN, Professor A.

The Ratio of Incommensurables in Elementary Geometry

[Title],

BURGESS, A. G.

PAGE

55

99

On the orthoptic locus of the semi-cubical parabola

79

[Title],

COLLIGNON, EDOUARD.

Recherches sur l'Enveloppe des Pédales des divers
points d'une Circonférence par rapport à un
triangle inscrit,

Démonstrations de deux théorèmes de Géométrie,

2

49

DAVIS, R. F.

Note on the determination of the axes of a conic,
HOLM, A.

94

Determination of the radii of the circles which touch
three given circles,

75

LINDSAY, W. A.

A Proof of the Theorem that the Arithmetic Mean
of n positive quantities is not less than their
Harmonic Mean [Title],

54

M'INTYRE, J. H. A.

On Mathematical Instruments and the accuracy to be
obtained with them in some elementary practical
problems [Title], -

93