HALO ROUND THE SUN. AT Boston, on June 16, at 2h 30m P.M., was seen a Halo round the Sun, with prismatic colours on the north-east and south-west; and a much larger circle, well defined, of a pale white, having the sun in the south-west of its circumference. The interior of the halo, except the sun's disc, was of a much darker colour than the surrounding atmosphere. The centre of the larger halo was very near, if not in the zenith. AERONAUTICS. THE veteran aëronaut, Mr. Green, has communicated to the Times the following interesting meteorological observations, made during a recent balloon ascent. 66 My ascent being made under circumstances favourable for meteorological observations in the upper regions of the atmosphere, and being furnished (by my friend and companion Captain Currie) with an excellent hygrometer, invented by Dr. Major, and admirably adapted for aëronautic observation, the following experiments were made between the hours of 7 and 8 P.M. To these there is added, a set of observations made at the earth's surface by Mr. Jones, of Charing Cross, with a similar instrument, and the requisite calculations. 66 August 1, 1843, at 20 minutes past six P.M., barometer on the earth, 29-90; thermometer, 69o. Barometer. Elevation. Dry Bulb. Wet Bulb. Dew Point Moisture. Grains Observations made at the earth's surface by Mr. Jones. Dry Bulb. Wet Bulb. Dew Point. Moisture. Grains. "The weight in grains is that quantity of vapour contained in a cubic foot of air, and from the foregoing experiment it will be seen that at the elevations between 5,000 and 7,000 feet above the earth the atmosphere was completely saturated with moisture." 285 GENERAL INDEX. Ants, Colossal, producing Gold, 259. Araneidæ, Functions of, 239. Riench's Test for, 207. Atmosphere, Composition of the, 123. Aurora Borealis, 282. Balloons, Mr. Monck Mason on Pro- Beacon, new, on the Goodwin Sands, 28. Bebeeru Tree in British Guiana, 249. Belts, Power transmitted by, 38. Blood, Mammiferous, Corpuscles of, Breakwater, Capt. Norton's, 30. Major Parlby's, 29. Bread and Flour, Nutritive Values of, Brick and Tile Making Machine, Bridges, Improvement of, 100. Bude Light, Dr. Ure's Report on, 64. Carbonic Acid Gas from the Human Carpet-loom, Improved, 91. Cement for Porcelain and Glass, 221. Chimnies, Improvements in, 72. New Night, at Liverpool, 85. Concrete, Mr. Hawkins on, 31. Corals, Distribution of, 150. Crimson Colour for Tinfoil, 97. 212. Danger-bird, the, 233, 271. Dark, Changes of Bodies in the, 138. Decoration of the New Houses of Par- Designs, Registration of, 90. Distances, to Measure, 86. Dover, great Explosions at, 25, 176. Surface, Diurnal Temperature of the, 130. Earthquake, Cause of, 116. Theory of, 275. in 1843-Antigua and Electric Light a substitute for Gas, 186. Glacial Theory, Forbes's, 255, 6. Glyphography, Palmer's patent, 192. Gold produced by Colossal Ants, 259. Graving Dock, New, at Woolwich, 19. Wrought Iron, the largest, 54. Hatching Apparatus, Todd's Porta- Heat, Intense, Effects of, 69. Moiré Metallique, Process for, 58. Musical Instruments and the Jac- Navigators Islanders, the, 231. Nutrition, Absorption of, in Food,201. Oil for Machinery, 90. Oil upon Waves, Effect of, 162. Ordnance Geological Museum, the, Survey, the New, 109. Organ, the Birmingham, 87. - Indian Rubber, 81. Wood and Granite, Wear of, 78. Permian System, the, 261. Rare Poisonous, 251. 242. |