A Treatise on Meteorological Instruments: Explanatory of Their Scientific Principles, Method of Construction, and Practical Utility, Nide 3

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Negretti & Zambra, 1864 - 160 sivua
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The Words on the Scale
12
Correction due to Capacity of Cistern
13
PUBLIC BAROMETERS
14
FISHERY OR SEACOAST BAROMETERS
15
Admiral FitzRoys Words for the Scale
16
Instructions for Seacoast Barometer
17
French Seacoast Barometer
18
COMMON MARINE BAROMETER
19
THE KEW MARINE BAROMETER
20
Method of verifying Barometers
21
FITZROYs MARINE BAROMETER
22
Words for its Scale
23
Trials of this Barometer under Gunfire
24
NEGRETTI AND ZAMBRAS FARMERS BAROMETER AND DOMESTIC WEATHERGLASS
25
Rules for Foretelling the Weather 27 Causes which may bring about a Fall or a Rise in the Barometer
26
Use of the Barometer in the Management of Mines 29 Use of the Barometer in estimating the Height of Tides
27
CHAPTER II
28
DIAL OR WHEEL BAROMETERS 32 STANDARD SYPHON BAROMETER
31
BAROGRAPHS OR SELFREGISTERING BAROMETERS SECTION 33 MILNES SELFREGISTERING BAROMETER 34 MODIFICATION OF MI...
32
KINGS SELFREGISTERING BAROMETER
34
SYPHON WITH PHOTOGRAPHIC REGISTRATION
35
CHAPTER IV
37
FORTINS MOUNTAIN BAROMETER 39 NEWMANS MOUNTAIN BAROMETER
38
NEGRETTI AND ZAMBRAS PATENT MOUNTAIN AND OTHER BAROMETERS
40
Short Tube Barometer
41
Method of Calculating Heights by the Barometer Tables and Examples
42
CHAPTER V
47
The Waterglass Barometer
49
SYMPIESOMETERS 48 ANEROIDS
50
SMALL SIZE ANEROIDS
54
WATCH ANEROID
55
Measurement of Heights by the Aneroid Example
56
METALLIC BAROMETER
57
CHAPTER VI
58
STANDARD THERMOMETER 57 Method of ascertaining the exact Boiling Temperature Tables
59
The method of testing Thermometers 61 Porcelain ScalePlates
65
Enamelled Tubes
66
SUPÉRHEATED STEAM THERMOMETER
68
THERMOMETER FOR SUGAR BOILING 67 EARTH THERMOMETER 68 MARINE THERMOMETER CHAPTER VII
69
RUTHERFORDS MAXIMUM THERMOMETER
70
PHILLIPSS DITTO DITTO
71
Tables for Determining the Temperature of the Vapour of Boiling Water
72
NEGRETTI AND ZAMBRAS PATENT MAXIMUM THERMOMETER
74
RUTHERFORDS ALCOHOL MINIMUM THERMOMETER
76
ACTINOMETER
89
CHAPTER IX
90
JOHNSONS METALLIC THERMOMETER
91
HYPSOMETRIC APPARATUS
93
CHAPTER X
94
Method of Caloulating Heights from Observations with the Mountain Thermometer Example
95
Table of Temperature of the Soil
96
THERMOMETERS FOR ENGINEERS
99
CHAPTER XI
101
LESLIES HYGROMETER
102
DANIELS HYGROMETER
103
REGNAULTS CONDENSER HYGROMETER
104
Temperature of Evaporation 106 Masons HYGROMETER
105
SELFREGISTERING HYGROMETER 108 Causes of
108
Plan of Exposing Thermometers
109
CHAPTER XII
110
RAINGAUGE WITH FLOAT 113 RAINGAUGE WITH SIDE TUBE 114 FITZROYS RAINGAUGE
111
SELFREGISTERING RAINGAUGE 116 The principle of Measurement
112
Position for Raingauge
113
Utility of Statistics of Rainfall
115
NEW FORM OF RAINGAUGE
116
CHAPTER XIII
117
LINDS WINDGAUGE 124 HARRISS WINDGAUGE
118
WHEWELLS ANEMOMETER
121
OSLERS ANEMOMETER AND PLUVIOMETER
122
BECKLEYS ANEMOMETER
124
SELFREGISTERING WINDGAUGE 130 Anemometric Observations
125
CHAPTER XIV
127
VOLTAS ELECTROMETER 133 PELTIERS ELECTROMETER 134 BOHNENBERGERS ELECTROSCOPE
128
THOMSONS ELECTROMETER
130
Fundamental Facts
131
Lightning Conductors 138 Precautions against Lightning
132
CHAPTER XV
134
CLARKS OZONE CAGE 143 Distribution and Effects of Ozone
135
CHAPTER XVI
136
CHEMICAL WEATHER GLASS
137
LESLIES DIFFERENTIAL THERMOMETER 147 ROMFORDS DIFFERENTIAL THERMOMETER 148 GLAISHERS THERMOMETER STAND
138
THERMOMETER SCREEN FOR USE AT SEA 150 ANEMOSCOPE 151 EVAPORATING DISH OR GAUGE
139
ADMIDOMETER 153 CLOUD REFLECTOR 154 SUNSHINE RECORDER
140
SET OF PORTABLE INSTRUMENTS 156 IMPLEMENTS 157 HYDROMETER
141
NEWMANS SELFREGISTERING TIDEGAUGE
143
ADDENDA
147
List of Works on Meteorology

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Sivu 84 - The refrigeration at night is extreme when the air is dry. The removal, for a single summer night, of the aqueous vapour from the atmosphere which covers England, would be attended by the destruction of every plant which a freezing temperature could kill. In Sahara, where 'the soil is fire and the wind is flame,' the cold at night is often painful to bear.
Sivu 11 - ... and then fall, it presages a change, though not to so great a degree as if it had stood lower : besides which, the direction, and force of wind, are not in any way noticed. It is not from the point at which the mercury may stand that we are alone to form a judgment of the state of the weather, but from its rising or falling ; and from the movements of immediately preceding days as well as hours, keeping in mind effects of change of direction, and dryness, or moisture, as well as alteration of...
Sivu 19 - ... much lower than the lowest pressure to which marine barometers are likely to be exposed ; and by compressing the air it can be made to read higher than the mercury ever stands at the level of the sea. The tube of the standard is contracted...
Sivu 26 - A rapid rise Indicates unsettled weather. A gradual rise indicates settled weather. A rise with dry air and cold increasing- in summer indicates wind from the northward; and if rain has fallen, better weather may be expected. A rise with moist air and a low temperature indicates wind and rain from the northward.
Sivu 85 - Shallow pits are dug, which are partially filled with straw, and on the straw flat pans containing water are exposed to the clear firmament. The water is a powerful radiant, and sends off its heat copiously into space. The heat thus lost cannot be supplied from the earth — this source being cut off by the non-conducting straw. Before sunrise a cake of ice is formed in each vessel.
Sivu 105 - ... passes into a vessel of water, placed at such a distance as to allow a length of conducting thread of about three inches. The cup or glass is placed on one side and a little beneath, so that the water within may not affect the reading of the dry butt) thermometer.
Sivu 53 - ... deteriorate in time, though slowly." " The aneroid is quick in showing the variation of atmospheric pressure ; and to the navigator who knows the difficulty, at times, of using barometers, this instrument is a great boon, for it can be placed anywhere, quite out of harm's way, and is not affected by the ship's motion, although faithfully giving indication of increased or diminished pressure of air.
Sivu 88 - Into the cylinder this thermometer d, is introduced, the stem of which is protected by a piece of brass tubing. We thus obtain the temperature of the mercury. The flat end of the cylinder is to be turned towards the sun, and the surface thus presented is coated with lampblack.
Sivu 19 - The divisions on this scale correspond exactly with those on the tube of the standard barometer. A vernier and telescope are made to slide on the scale by means of a rack and pinion. The telescope has two horizontal wires, one fixed and the other moveable by a micrometer screw, so that the difference between the height of the column of mercury and the nearest division on the scale of the standard, and also of all the other barometers placed by the side of it for comparison, can be measured either...
Sivu 81 - The result of this is that on the thermometer being set, the contracting force of the mercury in cooling withdraws the fluid in the indicating stem only, whilst on its expanding with heat the long column does not move, the increased bulk of mercury finding an easier passage through the larger bore into the small pear-shaped chamber attached.

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