CONTENT S

OF THE

FIRST VOLUME.

ORDER OF THE LECTURES.

I

NTRODUCTORY. P. 1 to 18.
The advantages of natural knowledge.

LECTURE II. THE SUN, p. 19 to 32.

His compofition-rotation-particles-magnitude -compared to Deity-mifplaced gratitude.

Two plates to this lecture, p. 33, P. 34.

VOL. I.

fituation-spots

LECTURE III. THE MOON, p. 35 to 52. Her diftance-opacity-revolution-eclipfes furface-librationpeculiarities to her inhabitants-diameter-light, why cool; why changing-worship.

Five plates to this lecture, p. 53 to 59..

LECTURE

"

LECTURE IV. THE SOLAR SYSTEM, p. 60 to 74.

The planets-names-and diftances on the lowest calculation-periods-relative planes-appearances-colours-perihelion-aphelion denfity-planets in order difficult to comprehend fuch intervals of space -their motive impulse-comets—if inhabited ?

One plate to this lecture, p. 75 to 78..

LECTURE V. CELESTIAL BODIES feen from the Earth, P. 79 to 100.

The ecliptic-figns-fun-moon-inferior planets-perigee-apogee -tranfit-conjunction-fuperior planets-oppofition-stationary-retrograde-in order-Venus, evening star-morning ftar-Jupiter's eclipfes -Saturn-moons prove them inhabited ancient names-worship-no influence on earth.

Eleven plates to this lecture, p. 101 to 121.

LECTURE VI. THE STARRY HEAVENS, p. 122 to 130. Their duration-light-they are funs-nebula-periodical-newrenovated-refplendent fpaces-pole star-their chorus.

No plates to this lecture.

LECTURE VII. THE EARTH as a Planet, p. 131 to 149. Its inclination-if upright, no change of feafons-fuch fuppofitionmotion-zones-folftices-circles-their relative light and heat-hap-. py fituation of Britain-fpring-fummer-autumn-winter-fhaperound-flat at the poles-antipodes.

Six plates to this lecture, p. 150 to 158.

LECTURE VIII. THE ATMOSPHERE, p. 159 to 173. If no atmosphere-transparent-twilight-height-elevates the hori zon-Hawkfbee's experiments-its compofition-its duties-in tafting -hearing-echoes-smelling.

Three plates to this lecture, p. 174 to 178.

LECTURE IX. VARIATIONS OF THE ATMOSPHERE, P. 179 to 208.

Winds-conftant-inconftant-monfoons-their caufes-periodical

-calms

calms-breezes-rapidity-clouds-rain-dews-froft-hail-fnow-
lightning-thunder-water-fpouts-hurricanes-tornado-the plague.

Two plates to this lecture, p. 209 to 211.

LECTURE X. THE ELEMENT AIR, p. 212 to 228.

Heavy-its bounds-furrounds the earth-its fpring-denfity-com-
preffibility-expanfibility-its abfence-purer air-lighter air-heavier
air-their union neceffary to life.
No plates to this lecture.

LECTURE XI. WATER, p. 229 to 260.

Its univerfality-feveral forts-wholesomeness-rain-water-fnow-

water-fea-water-its weight-if compreffible-expanfible-fteam-rifes

to its level-ice-its fuppofed compofition-ufes-theory of fprings-

rivers their velocity-furface-windings-the ocean-tides-furf—

furges.

Two plates to this lecture, p. 261 to 266.

LECTURE XII. E ART H, p. 267 to 279.

Perpetual variation-effects of air and water-chemical diftribution-
fertility-vegetable-ufes in vegetation—its honours.

No plates to this lecture.

LECTURE XIII. FIRE, p. 280 to 304.

A difficult fubject-fuel not fire-nor light-fire leffens at a distance
from the earth-phosphoric bodies-in water-heat-known by one
fenfe only-various theories-the author's-its origin-is claftic-pene-
trating requires air to burn-pyrometers-phlogifton-in vegetables-
animals-minerals-Lemery's pyrophorus-fubterraneous-restrained.
No plates to this lecture.

LECTURE XIV. LIGHT, p. 305 to 337.

Other fluids-the magnetic-needles-the compafs-variation-elec-
tric fluid-light, its particles very minute-elastic-rapid-its courfe
-tranfparency-opacity-mixture-prifmatic colours-rainbow-fea-

bow-lunar rainbows its colorific effects-luminous rays-its impul-

five power-its emiffion from the fun-preferves planetary motion-

univerfal-conclufion.

Six plates to this lecture, p. 338 to 351.

a 2

SECOND

SECOND SERIES OF LECTURES.

LECTURE I. THE EARTH as a World, p. 32.

Its mountains rivers both largest at the equator-causes of moun-
tains-volcanos foffils-the delugeiflands formed-glacieres-new
volcanos-Vefuvius.

LECTURE II. STRUCTURE OF THE EARTH, p. 33 to 59.

Proportion of land and water-deep water-why our researches inde-

terminate-caverns-fiffures-petrifaction-mines-gold-filver-mer-
cury-lead-coal-their damps-diamond-falt-their temperature→→
ftrata of earth-earthquakes-Kircher's account of one.

LECTURE III. INHABITANTS OF THE EARTH, p. 60 to 86.

Scale of life-fenses-inftinct its commixtures-life-fenfation-

plants-animals-organs-degrees of fenfe-felf-fupport-fertility and
fterility proportionate to power-proportionate happiness-rapacity-
of animals, and vegetables.

LECTURE IV. TRANSMISSION OF LIFE, p. 87 to 110.
In vegetables-animals-analogy-perception-feat of life-of fen-

fation-omnia ex ovo-multiplication by cuttings-infects-feeds of

plants-eggs of birds-history of one hatching-warmth-oviparous

viviparous.

LECTURE V. MEMBERS OF A LIVING BODY, p. 111 to 136.

Bones-their denfity-lubrication-security-joints-muscles-blood

-general principles-parts neceffary to life, various-refpiration-digef-
tion-abstinence-perspiration-hair-feathers-skin-food-carnivo-

rous-pifcivorous-frugivorous-graminivorous

omnivorous.

LECTURE VI. POSITION, &c. p. 137 to 163.

Erect-prone-determines the courfe of life-inftin&t-defcends to

pofterity incapable of variation-differs from reason, how-reason,

what-voice-trength-fleep-dreams-courfe of life-childhood-

language-growth-maturity-age-death-future ftate.