Introduction-Two Classes of Substances, p. 5-Proper-
ties of Glass, p. 6-Mahogany-tree, p. 8-Pliny's Account
of the Discovery of Glass, p. 9-First Experiments, p. 12—
Geographical Position of the Phoenicians, p. 13-Glass
Adders, p. 15-Horace Smith's Address to the Mummy, p.
16-Ancient Mirrors, p. 18—Use of Glass by the Romans,
p. 20-Venetian Merchants, p. 21-The Middle Ages, p.
22-Composition of Glass, p. 23--Barilla, Soda, Alkalis,
p. 24-Fucus vesiculosus, p. 25-Different Kinds of Glass,
p. 26-Flux, the Term explained, p. 28-Flint-glass, p.
29-Crown-glass, p. 31-Method of blowing, p. 32-Sepa-
ration from the Blow-pipe, p. 33-Broad and Bottle-glass,
p. 35-Plate-glass, p. 36-Process of casting, p. 37-Glass
Works at Ravenhead, p. 38.
MANUFACTURE OF GLASS, CONTINUED.
Process of annealing, p. 46-Bologna Phial, p. 48—Ru-
pert's Drops, p. 49-Reflecting Power of Glass, p. 51-
Silvering Looking-glasses, p. 52-Introduction of Drinking-
glasses, p. 54-Itinerant Glass-workers, p. 55-Thermo-
meter Tubes, p. 57-Glass Beads, p. 58-Roman Mosaic,
p. 62-Tessellated Pavement, p. 63-Glass Pictures, p. 64-
Herculaneum Glass, p. 66-Septimius Severus, p. 68-
Alexander Severus, p. 69-Eleusinian Mysteries, p. 70--
Explanation of the Portland Vase, p. 74-Dr. Darwin's
Description of it, p. 79.
Colour a Property of Light, p. 84-Refraction ex-
plained, p. 87-Dispersion, p. 88.-Difference of Refraction
in Air and Water, p. 89-Experiment of the Basin and
Shilling, p. 90-Deceptive Power of Refraction, p. 92—
Dangerous Situation of a Ship, p. 93-Reflection, p. 96—
Lenses, p. 98-Diverging, converging Rays; the Terms
explained, p. 99-Deceptive Effect of Refraction shown by
Experiment, p. 100-Focus explained, p. 102-Accidents
caused by Burning-glasses, p. 103-Aristophanes, Archi-
medes, p. 104-Buffon's Burning-glass, p. 105-Parker's
Lens, p. 106-Convex, concave, explained, p. 108-Mirrors,
the Effect of different Surfaces, p. 109-Optical Deception
produced by a concave Mirror, p. 110.-Inverted Bottle, p.
111.-Why a concave Mirror sometimes magnifies, and
sometimes diminishes the Object, ib.-Optical Exhibition,
p. 112-Cornelius Agrippa and Lord Surrey, p. 115.
SPECTACLES AND TELESCOPES.
Invention of Spectacles, p. 123-Discovery of the Tele-
scope, p. 124-Galileo's first Attempt, p. 125-Telescope,
the name explained, p. 126-Defect of Galileo's Instru-
ment, p. 127-Discovery of the Phases of Venus, p. 129-
Transit of Venus, p. 130-Satellites of Jupiter, p. 132—
Finding the Longitude, ib.-Difficulty of such Observa-
tions at Sea, p. 135-Various Modes of finding the Longi-
tude, p. 136-Harrison's Time-keeper, p. 139—Chronometer,
the Term explained, p. 140-New Improvement, ib.-Pro-
gress of Light, p. 141-Father Scheiner's Improvement on
the Galilean Telescope, ib.-His second Improvement, p.
142-Construction of the Telescope, p. 143-Father Reita's
Improvement, p. 144-Coloured Fringes, p. 146-Dollond's
Experiments, p. 147-Achromatic Telescope, p. 149-Dol-
land's farther Improvements, ib.-Reflecting Telescopes, p.
150-Dr. Herschell's, p. 151-Fluid Lens, p. 152.
Microscope, the Name explained, p. 155-Simple Mag-
nifier, p. 156-Dr. Hooke's Lenses, p. 157-Double convex
Lens, p. 158-Its magnifying Power explained, p. 159—
Single Microscope, p. 161 - Compound Microscope, p.
163-Diagram explained, p. 167-Telescopes and Micro-
scopes compared, p. 169.
Camera-Obscura, p. 171-Baptista Porta, p. 172—Effect
of a Camera accidentally produced, p. 173-Simplest Form
of the Camera, ib.-Improved Camera explained, p. 175—
George Smith, p. 176-Malayan Chief, p. 177.
Magic-Lantern, its Structure explained, ib.-Phantas-
magoria, p. 178.
Observations of Herschell, p. 181-The Eye compared
with the Camera, p. 183-Structure of the Eye, p. 184-
Sclerotica, Cornea, explained, p. 185.-Coats and Humours
of the Eye, p. 186-Choroid, Pigmentum Nigrum, p. 187—
Iris, Pupil, p. 188-Crystalline Lens, p. 189-Nerves,
their Office and Distribution, ib.-Optic Nerves, p. 191-
The Retina, p. 192-Section of the Eye explained, p. 193—
Minuteness of the Image, p. 195—Mr. Hall's Discovery,
p. 196-Patents, p. 197-Lord Mansfield's Opinion, p.
198-Humours of the Eye, p. 199-Office and Structure of
the Iris, p 200-Power of the Eye to adjust itself to Dis-
tance, p. 203-This Power suited to the Wants of different
Animals, exemplified in Birds, p. 204: in Fish, p. 205-
Form of the Crystalline Lens in Fish, ib.-Why it is more
globular than in Man, p. 206—Why Fish have no Fibres
to contract the Pupil of the Eye, p. 207-Milton's Blind-
ness, p. 208-Defences of the Eye, p. 209—The Eye an un-
perceiving Instrument, p. 210-its power of Reflection only
mechanical, p. 210—The perfect Machinery of the Eye a
Proof of the Wisdom and Goodness of God. p. 211.
« PreviousContinue » |