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Airopaidia

An alphabetical index of the contents:

Reading edition

Referring to the sections and notes, but not to the Pages.

A.

Absorption of Water by Air, Experiment to prove the, 247

Accumulation of Air, mediocèanal, 259, 260

Aërial Scenes described, 39, 47, 51, 56

Air gives form to Things, 53

- gentle, its Effect on the Surface of the Balloon, 201

- calm, its Effect on the Surface of the Balloon, 202

- pure, cool, defloguisticated, perpetually descending, 252

- descending Torrents of, on Etna and Teneriffe, 265

- Reception and Dispersion of, what, 280

Air Bottle Balloon, its Use, 311

- - - preferred to an interior Balloon, 314

Aironaut Employments of the, in the Balloon, 29

- - Attitude of the, in the Balloon, 32, 33

- - lost over a Country well-known when below, 177

- - to try different Heights, to find a favorable Wind, 309

- - to wait, in the Calm above the Clouds, for a Wind, 309

Airostat, a small one first liberated, 8

Altitude apparent, from the Balloon when stationary, 49

- - barometric, 49, b.

Anchor and Cable, 13

Apogay Winds, what, 241

Apparent Height proportioned to the barometric Height, 49

Appearance of a Plain below, the Size of a moderate Carpet, what, 179, 189

Appearance of a Plain below, the Size of a Handkerchief, what, 181, 187

Appearances at different Altitudes, from the Balloon, 213

Articles, Weight and Number of, 26

Ascent, to check and promote, 14

- - Preparations for, 22

- - of the Balloon at 40 Minutes past I. o’clock, 28

- - with twenty Pounds of Levity, 28

- - of Balloons, Causes to limit the, 279

- - proper Times for, 285

- - new Mode of, to determine the Height, 299

Atmosphere gross, when seen throu’, from below, 55

- - Depression of the, 232

- - State of, favorable to the Direction of Balloons, 268

- - Conjectures concerning the Warmth of the superior, 275

- - probably respirable at great Altitudes, 277

- - Height of, 290

- - Weight of, in England, 290

Attention to the Balloon necessary, 35

Aurora Borealis, Conjectures concerning Appearance of, 274

B.

Ballast of what it consisted, 27

- - when to be first thrown out, 21

- - in Hand, ready to throw out, 91

- - thrown down, 67, 95

- - thrown over nearly 32 Pounds, 103

- - poured down at once 20 Pounds, 183

Balloon going to Sea, 75, 87, 90

- - in a quiescent Bed of Air, 75

- - of rowing it to any Point, in a Calm, 75

- - drawn aside out of the Perpendicular, 103

- - shrunk to its former Shape, 123

- - alternately rising and falling, 125, 138

- - in the Air five Hours and a Quarter, 207

- - sustained above Water, how, 294, 295

- - best Form of, 307

- - Double, what, 314

Balloons their Defects, and further Improvements, 303

- - Air-tight Varnish for, 320, 325

Barometer, and Thermometer, when stationary, 36

- - Fluctuation of the Quicksilver in the, 37

- - Mensuration of Heights by the, 350

Beautiful preferred to the Sublime, in Prospects, 42

- - Appearance, 43

Bladders necessary, 26

- - began to crackle, 116

Bottles of Air thrown down, Caution, 74, 77, 84

Breath not affected, nor visible, during the Excursion, 126

Breeze Sea-, 88, 92, 257

C.

Cable, and Anchor or Grapple, 13

- - to be fastened to a Center above the Car, 297

Calculations of the Distance seen from the Balloon, 52, a.

- - of the Height of Mountains, 171, a.

Calm above, and Wind below, at the same Time, 168

Canal artificial, Duke of Bridgewater’s, Appearance of, 166

Cannon first discharged at IX. o’clock, 7

- - the second Time, at XII., 11

- - the third Time, at 40 Minutes and a half past I., 64

- - the last Time, at 10 Minutes and a half past II., 62

Car and Hoops, their Dimensions, 35

Caution to keep the Circle clear during the Inflation, 23

- - against the Dropping of Water out of the Balloon, 31

- - on Landing, 98

- - not to open the upper Valve, 122

Charts Balloon, first suggested, 168

Chilliness first perceived, 92;

again, 109

- - felt near moist Places, 283

Circularity of Prospect, 79, 221

Circumstance, each to be recorded, 4

Circumstances apparently superfluous, mentioned and repeated, why, 5

Clouds, an upper Tier seen to move in a safe Direction, 7, 46

- - Perspective of the, 51

- - appearing in rapid Motion, 163

- - View of the, taken from above them, 130, 171

- - Colouring of the, 172

- - highest visible, 213

Cochuc-Varnish, 320

Cold, its Effects on the Balloon, 94

Colour of the Rivers, red, 44

- - of the City of Chester, blue, 45

- - of Thunder-Clouds, 54

- - of upper Clouds, 57, 172,

Colours, primary, of Objects beneath, 129

Columns of Air, depressing, observed by the Ancients, 239

Compass, the properest Kind of, 38, a.

Conclusions, useful, 159

Conjunction of the Planets preceding a Hurricane, 211

Contemplation of the Prospect, 113

Course of the Balloon traced, to shew the Manner in which it was affected in passing over Water, 78

Curls and Streams of Air, Smoke and Vapour, 250, b.

Currents of Air, horizontal, 20

- - from above, to be guarded against, 21

Currents under, of Air, 87

- - of Air, blowing to and from great Towns, 250

- - of Air, contrary, at different Heights, at the same Time, 267

- - the Balloon rising throu’ different, 106

D.

Defects in the Composition for Balloons, remedied, 320

Depressing Torrents of Air, 254

Depression of the Atmosphere, 232

- - over moist Places in fair Weather, 243

- - of the Atmosphere proved from History, 253

- - nocturnal, of the Atmosphere, 267

- - corroborating Proofs of a, 268

Depth below, conveys no Idea of Distance, 157

Depths, Mensuration of, with Barometers, &c. 348, 368, a, a.

Descent of the Balloon, to retard the, 15

- - Signs of the, 17, 159, 181

- - at first rapid, with a rushing Noise, 96, 97

- - Proof of gentle, 100

- - Change in visible Objects, during the, 182

- - of Balloons over Water, enquired into, 229, 230

- - - - - - Means to prevent, 294, 295

Description of the Ascent, 47

Diameter of the Prospects above and below, 52, 79

Diminution of Objects, excessive, when seen from the Balloon, 223

- - - - Laws respecting the, 224

Direction of the Balloon, Hints for the. 315

Distance seen from the Balloon, Calculations of the. 52, a.

- - of the Balloon from Chester, at the Report of the 4th Cannon, 64

- - Idea of, from Experience, 158

- - what is the greatest, to be seen from the Summits of the highest Mountains, 171, a.

- - at which an Object can be distinguished by a good Eye, 175, a.

- - of the Balloon-Course, 191

- - at which, the Balloon was seen, 227

- - and Height of a Balloon, found by a Quadrant, 310

Dove turned out of the Car, 61

E.

Earth removed from Sight, 170

Echo none above, 39

Eknèfiai Winds, what, 241

- - a dry Wind, 267

Electricity of the Air, 65

Elliptic Solid, the Form of the Balloon an, 160

Employments of the Aironaut, 32

Engines Steam, Models of, for Inflation, described, 429

Equatorial Hoop, its Use, 161, 315

Evaporation of Steam, 249

Expansion of the Balloon, by what Manouvre, 132

Experiment to prove whether the superior Atmosphere be hazy, tho’ the Sun continue shining, 47, a.

Experiments necessary, in order to improve the Modes of Direction, 296

Examples in the Mensuration of Heights with Barometers. See Table.

Example 1st, Practice of the, 351

- - - Recapitulation of the, 385

- - 2d, Practice of the, 386

- - - Recapitulation of the, 409

- - 3d, Practice of the, 410

- - 4th, Practice of the, to determine small Heights, 419

- - 5th, Practice of the, to determine the Height of the Balloon, 423

F.

Fish Dìodon-Globe, a Model for Balloons, 377

Flag white, hung out a Quarter of a Mile in Length, 4

- - hung out half a Mile, in all, 66

- thrown down at a Mile high, 59

- Descent of the, 60

- white, its Effect on the Balloon, 70

- - Progress of the Balloon marked by the. 91

- - impeding the Balloon, 103

- - the remaining one unfolded, 105

- - shewed a Change in the Direction of the Wind, 105

Flights with the Balloon, for three Hours longer, 193

Flying-Coach, 149

Foot Roman, the Measure of a, 49, b.

Form of the Balloon at its greatest Altitude, 14

- - - the same at each Descent, 159

G.

Gass not offensive during the Voyage, why, 34

- procured by Means of Acid, 338

Gass procured by Means of Steam, 429

Geography Balloon, first suggested, 167

Globe-Fish, a Model for Balloons, 377

Grapple or Anchor, 13

Gums Copal, Sandarac, Mastic, &c., 326

H.

Heat of the Sun, greatest, while in the Car, 59

Height apparent, proportioned to the barometric Height, 49

- - of the Balloon, when stationary, at the first Ascent, viz. 2332 Yards, 52, a.

- - in the Balloon, conveys no Apprehension of falling, 156

- - of principal Mountains, noted, 171

- - of a Mountain, seen at a Distance, calculated, 171, a, a.

- - to which Balloons will probably ascend, 278

- - fixed, Method of ascending to any, 299

- - of the Balloon, to ascertain by a Quadrant, 310

- - preparatory Instruments to observe the, 350

- - of the Balloon measured, 425

Heights to measure, Densities to estimate, 299

- - of the Atmosphere, while they encrease in an arithmetical Progression, the Densities are said to encrease in geometrical Progression: the Meaning of such Terms, 301, a.

Hemisphere upper only, of a Balloon to be inflated, 315

Hoop equatorial, its Use, 161, 315

Horizontal Motion, Signs of, deceitful, 18

Hours proper for the Ascent of Balloons over Water, 254, 255, 261

Hygrometer Horse-Hair, the best Kind, 217

I.

Illustration of the Scenery, 72

Improvement during the Process of Inflation, 24

Improvements how to be made in the propulsive Machinery, 319, 330

- - in the Process of Inflation by Acid, suggested, 339

- - suggested in the Process by Steam, 429

Incorrectness of Maps, 81

Inflation began at X. o’clock, with a small Balloon, 8

- - Degree of, to be limited, 278, 317

- - Process of, 339

- - by Means of Acid, Expence saved in the, 347

- - by Means of Steam, Expence saved in the, 429

Inflation by Means of Steam, Model and Mode of, 429

- - by Steam, preferred to the Process by Acid, 429

Information derived from the Shape of the Balloon, 159, 160

Inventory of the Voyage, 12

Iris 1st, round the Shadow of the Balloon, 56

- 2d, 73

- 3d, 136

Iron bright and fresh, proper for inflation, 431

L.

Landing, Manouvres during the, 98

- - first, near Frodsham in Cheshire, 100

- - second, near Warrington in Lancashire, 188

- - Precautions to secure a safe, 297

- - in windy Weather, Precautions to secure a safe, 298

- - improved Mode of, 317

Latitudes variable, light Airs playing in Eddies, common in the, 241

Level of the lowest Stratum of Clouds in fair Weather, 93

- all Inequalities of Surface reduced to the same, 111

Light of a red Colour, Conjectures concerning the, 222

M.

Machinery propulsive, to be used in the Calm, above Winds, 319

Magnitude of Objects, Laws respecting the, 224

Manouvres seen at a great Distance, 140

Map consulted, 174

Mast, a light hollow, 315

Meanders of the River encreased to the View, 81

Mensuration of Heights and Depths by Barometers, 348

Methods to ascertain the true Height, 350

Method, the cheapest to inflate by Steam instead of Acid, 429

Mistakes to be noticed, to prevent Repetition, 2

Motion encreased, progressive not perceived, 165

Motion of Air, called Reception and Dispersion of Air, what, 280

Mountains, Names and Heights of principal, 171, a.

- - their Use, 265

Mouth of the Balloon, closed, 102

N.

Neck of the Balloon, how to place it, 31

- - first tyed, 125

- - risen near eight Feet upwards, 119

- - an Attempt to reach it, 121

- - held Air-tight in the Hand, 125

Notes made during the Voyage, 36

O.

Objects diminishing as the Balloon arises, Description of, 109

Objects, all terrestrial, disappearing, 163

Order preserved during the Inflation, 23

P.

Parashute or Umbrella, 15

- - the Balloon formed a vast, 184

Perspective new, 39, 229

Place where the Balloon alighted, 100, 187

Points, the plainest generally most essential, frequently overlooked, 4, 338

Preparations for Ascent, 22

Prospects most beautiful, at what Height, 93

- - below noted, 128

Pulley or Reel, 13

R.

Rain warm in Winter, accounted for from the Theory of Accumulation, 270

Reception and Dispersion of Air, 280

Reel or Pulley, its Defects remedied, 41, a.

Respiration easy during the Excursion, 114

Resistence of the Air, as the Square of the Velocity of the falling Body, 15, a.

Rising, Signs of, 16, 30

Rivers, no Appearance of Water in the, 110

Rule, general for measuring Heights, copied, 384

Rusty Iron, improper for Inflation, 398

S.

Sail, three seen in the Liverpool Channel, 108

- - triangular Latteen, purposely to retard the Balloon, 315

- - Anemòmeter, what, 315

- - Weights to be added to the, 316

- - Vane-, what, 318

Scenes aërial, described. See Sublime.

Sea-Breeze discovered, 88

- - - its Duration, 256

- - - its Extent, 257

Sensation of rising described, 30

Sensations accompanying the Balloon, 141, 154

Shadow of the Balloon traced on the Clouds, 56, 73, 136

Shadows, their Length, at Noon, calculated, 84

- - - - at half past III. calculated, 100

- - encreased, seemed to raise the Objects, 127

Shape of the Balloon altered, 118

Sign of Descent, 181

Signs to be observed in the Management of Balloons, 14, 15, 17, 20

Situation novel, peculiar to the Balloon, 221

Sound of the Gass throu’ the upper Valve, 134

- - in the Air, an uncommon, 162

Sounds immediately under the Balloon, their Effects, 175, a.

Spirits raised by the Purity of the Air, 155

Spunges of Air, 247

Squalls of Wind, the Day preceding the Ascent, 6

Stationary, the Balloon, 36, 122

Steam, Mode of Inflation by Means of, 429

Storms of Collection and Dispersion, 232, 263

Sublime and beautiful Scenes, 3, 39, 47, 48, 49, 51, 71, 84, 112

Sun, when hottest, 59

Sympathy of the Spectators, 46

T.

Table the 1st. See Mensuration.

- - for Expansion with Heat, from 1 to 40 Degrees, on Inches of the Barometer, from 9 to 32 Inches, 363

- - the 2nd, shewing the Variations of the Barometer, at each Inch and Tenth of the Quicksilver, from 1 to 32 Inches, the Air being at the freezing Point, 371

- - the 3d, for easy Calculations, from the 2d Table, 373

- - the 4th, shewing the Expansion with Heat, from 1 to 100 Degrees, on any Number of Feet in the Air, 381

Tastes not altered, on Account of the Height, 65

Thermometer warmer above than below, 126

Thermometers compared, 12, c.

Thunder-Clouds described, 52

- - - under the Balloon, 172

Tide of Air in the Atmosphere, 291

Tides highest, 288, 289

Time, noted, 7, 8, 11, 22, 28, 36, 62, 63, 68, 73, 77, 85, 100, 101, 124, 162, 174, 186, 203, 206

- - of Ascent, 28

Time, in which the Excursion was performed, viz. two Hours and a Quarter, 191

- - Noon, a dangerous one, for Balloons to pass an Arm of the Sea, 256

- - the best, pointed out, 256

- - Noon and full Tide, improper: Midnight and low Water, proper Hours for Ascent, over Water, 287

Torrents of Air mediocèanal, depressing, 257, 258, 259

- - - - accumulating, 260

Transparency circular, of Vapour, 222

Twine cut, lest it should prove a Conductor of Electricity between the Balloon and Earth, 103

U.

Useful Conclusions, 159

Utility of Balloons, 332, 333

Utility general, of Balloons, 338

V.

Valve upper, emits the lightest Gass, 124

- - first tried, 133

- - Swing, or Umbrella-Pendulum, as propulsive Machinery, communicates a progressive Motion to the Balloon, 319

Vane-Sail, 318

Vapour, Observation of the reddish, 33

- - white, beautiful Effects of, 71

- - began to be accumulated at a certain Height, 80

Vapours, their Transparency, 222

Varnishes, 320, 325

Velocity of the Balloon, 192

Vessels, the four and the River Wever disappeared, 110

View circular, from the Balloon at its greatest Elevation, 55

- - of the Balloon over Helsbye-Crag,77

- - of the Clouds, from above them, 171

- - from the Balloon of the Country between Chester and Rixton-Moss, 192

Vis Inertiæ, 70, 316

W.

Warmth of the superior Atmosphere, 275

- - of the Air above Plains and cultivated Countries, 276

- - of the Air over the Sea, at certain Times and Seasons, 276

- - descending from above, 284

Water poured down, to observe the Effects of Air upon it, 74

- - Balloon influenced on its Approach to, 76, 78

- - Balloon above the Influence of, 131

- - the Descent of Balloons over, 229

- - the Causes of their Descent over, 230

- - Absorption of, by Air, 247

- - a curious Phenomenon seen on its Surface, 249, 250, b.

- - Means to prevent the Descent of Balloons over, and within its Influence, 294, 295

Waves of Air, 21

- - of the Sea, the Dashing of, heard; the Sea being invisible, 80

Weather, about the Time of the Excursion, 211

Weighing during the Inflation avoided, how, 24

Weight of Provisions and Articles, 24

- - of the Balloon, and its Apparatus, 25

Wind heard below, 86

Winds, the Eknèfiai and Apogay, what, 241

- - the Directions in which they blow, 253, a.

- - the Eknèfiai productive of Cold, 253, a.

- - Land- and Sea-, 253, a.

- - contrary, at different Heights, their Use to waft Balloons to a given Point, 268

Wings, their Use, first to retard, second to direct, 315

Winter-Dress, preparatory, 26, 338

- - Prospect from the Balloon, 169

FOOTNOTES:

Notes in this chapter

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