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soon forget that connexion which has subsisted between us for a long course of

years.

From my mind the remembrance of your kindness can never be obliterated. Permit, me, then, as a testimony of my gratitude and sincere affection, to recommend to your future attention the works of nature and creation, by a careful investigation of which you will necessarily be led to the contemplation and love of the God of Nature.

Your knowledge, young as you yetare, of the fundamental principles of Geometry and Algebra, is such as to render scientific pursuits easy and pleasant. And your understandings are not more capable of entering into the sublime speculations of science, than your hearts are adapted to receive and cherish those impressions of gratitude, which are the natural consequences of enlarged and comprehensive views of the being and perfections of the Deity. In all your studies and pursuits, then, never for

get, that

-you cannot go
Where UNIVERSAL LOVE not smiles around,
Sustaining all yon orbs, and all their suns ;
From seeming evil still educing good,
And better thence again, and better still,
In infinite progression.

Tuomson,

END OF VOLUME 1.

CONTENTS OF VOL. I.

33

37

42

XV. Of the Lever

XVI. Of the Lever

XVII. Of the Wheel and Axis

XVIII. Of the Pulley

XIX. Of the Inclined Plane

XX. Of the Wedge

XXI. Of the Screw

51

56

63

68

73

79

83

89

96

100

104
107

ASTRONOMY.

.

XXII. Of the Fixed Stars

XXIII. Of the Fixed Stars

XXIV. Of the Fixed Stars and Ecliptic

XXV. Of the Ephemeris

XXVI. Of the Solar System

117

123

127

134
142

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