Entered according to act of Congress, in the year 1845, by THOMAS FISHER, in the Clerk's Office of the District Court for the Eastern District of Pennsylvania.

UNITED STATES BOOK AND JOB PRINTING OFFICE, LEDGER BUILDING.

CONTENTS.

K-AC 8
F53

Biology
Library

PAGE

5

Description of the Dial of the Seasons,

The Sun's Declination,

Comparative View of the Sun's Declination,

Explanation of the Pictorial Basis of the Dial of the Sea-

A Day--the diurnal revolution of the earth on its axis,

illustrated in a bird's-eye view of the rolling planet, on

the 40th degree of north latitude, -

Starting Point, the Hall of Independence at Philadelphia,

The Alleghany Mountains-the Susquehanna River,

Pekin-the Palace-the Emperor,

Tartary,

The Caucasian Mountains-Mount Ararat-Constantinople, 78

Reflections on the Natural History of Man,

83

85

95

Historical Reflections-the Topography of Europe-the
Biography of Napoleon-the Expedition to Russia-the
Battle of the Borodino,

The Retreat on the Beresina, -

Spain-Valencia-Plantations of Mulberry Trees-Silk

Manufacture-the Mountain Sheep Pastures-Castile-

Madrid-Cadiz,

-

The Genealogy of Europe,

The Genealogy of the United States,

122

-

124

The Hydrography of Europe, and of the Entire Tributaries

131

134

136

146

The Reciprocity of Southern and Arctic Currents of the

Ocean,

The Shores of the United States-New Jersey-the City
of Philadelphia-Hall of Independence-Completion of
the bird's-eye view, -

The Earth's Annual Motion in its orbit round the Sun,

causing the Seasous, or the Picture of a Year,

The Simultaneous Ripening of the Harvests of a Whole

Hemisphere,

The Simultaneous Migrations of the Birds-the Boblink, 156

The Certain Return of the Seasons in all Latitudes in

Correspondence to the Sun's Declination,

155

The Earth contemplated as one continuous Landscape-as
one grand Museum of Universal Nature,

Memory consists but of Mental Pictures,

167

168

The Earth contemplated at one view, as an entire Planet, 171

Local and Temporary Irregularities of Climate, accounted

for,

CONTENTS.

Comparative Effects of Temperature on Young Animals, -
Medical Science yet in Progress,

-

The nearly equable Temperature of all the warm-blooded
Animals-the Chemistry of Respiration,

Food in all Climates,

V

178

179

180

Modes in which Nature equalizes and endeavors to main-

tain this equable condition through alternate heat and

cold,

The Proper Temperature of Apartments, modes of warming,

&c.-Anthracite Fires, Clothing, &c.

183

184

185

The Winters of the United States, or rather of Philadel-

phia and the Middle States, compared with those of

Paris and London,

The Extreme Range of Temperature within which Vege-

table Life is comprised,

-

The Extreme Range of Temperature in which Animal

Life exists is somewhat larger, but its more perfect de-

velopments are confined to a comparatively very limited

range of mean temperatures,

Warmth and Cold alternating, within moderate limits, are

more healthful and more agreeable than any unchanging

temperature,

Effects of Temperature on Diseases,

Comparative Mortality of Countries,

Importance of Health to Intellectual Achievement,

Table of the General Effects of Temperature in its widest

range,

186

186

Table of the Distribution of Men of Intellectual Distinc-
tion in relation to Climate,
Suggestion of a line of Mean Temperature which has been
most productive of Men of Genius,

Concluding Remarks,