July 25, 1884.] 



• KNOWLEDGE • 



Vll 



Miscellaneous — confin ued. 

 Kettle, tht> explosiuii of an open, iift 

 Knowledge, references to ulteratioua Id, 129, 130 



Lake Superior, copper-mines of, lilft 



Langenboe Church untl the recent earthquake, 3iO 



Lost railway oars, 'i'6'i 



Lead, production of, in Spain, 320 



Lighthouse, a line example of a, :JH9 



Lighting of railway carnages, the, 190 



Lightning-rod, the. Mil 



Liquid tire-proof eyanito, the, 354 



Liquefaction of gaaes, the, 312 



Loieette, Professor, system of memory -teachiag by, 59 



Long-distance telephony, 119 



Lucifer match manufactory in Sweden, a, 28 



Lunacy Law Reform Association, report of the, 479 



Luiotype, the, "ti 



Macqcabie light (Port .Tiiclcson, Australia), 30'J 



Man, sense of direction in, 22 



Manganese, black oxide of, in Jamaica, 21-1 



Marine losses of the world during 1883, 228 



Matrix of the diamond, the, 222 



Metropolitan Railway, issue of tickets by the, 391 



Mineral statistics ot"the United Kingdom, the, 273 



Moisture on glass, 297 



Montigny, M. Ch., spectrometer of, 4S9 



Morality of happiness, the : care for self aa a duty, 20^1 



Morning-glow, tne, 39 



National Health Society, the, 173 



Negative thermometer, a, 131 



New illuminant, a, '2.21 



Norfolk, the Duke of, and the Sheffield Technical 



School. 4G'i 

 Northern Pacific Railway, opening of, amusing allusion 



to, 76 

 North Pole, the secret of the, 103 



Ocean" Collieries, electric light inatallatlon at the, 135 



Ohio, floods in the, 460 



Ohio railways, statistics of the, 309 



Opinions, remarks on, 130 



Ordnance Depattment, the, and Lieut.-ColonelHope, 



454 

 Our portrait, 42 

 Overhead wires, the danger of, 13 j see also 393 



Panama Canal, the, 372 



Paper-making statistics, 419 



Paris, gas in, 367 



Pathogenic micro-organisms, demonstration of, by Mr. 



"Watson Cheyne, 252 

 Phenomenon, a curious, 58 

 Photographic Society of London, the, 374 

 Physical pain alle\n:ited by mathematical studies, 133 

 Pintsch gas apparatus, the. 3S2 

 Pintsch, Mr. Julius, the death of. 103 

 Platinum wire of extreme thinness, 463 

 Poetry of science, 209 

 Portrush electric tramway, singular accident on the, 



228 

 Primitive man, lectures on, 36 

 Production of coal, the, 33S 

 Punch, a criticism of, 149 



Rails, production of, 190 



Reading elephant, a, 220 



Refraction of waves, the, 396 



Rhone at Geneva, the, 462 



Siachuelo (ironclad built for the Brazilian Govern- 

 ment), account of the, 300 



Rogers, J. B., Electric Light and Power Companv. 

 354 



Rotating the plane of polarisation of light, 396 



Rowing in the university boats, newspaper criticisms 

 of. 229 



Royal Victoria Coffee-hall, the, 233, 291, 454 



Rusldn, Professor, remarks on, 337 



Safety lamps, 60 



Sagacity of the horse, 246 



Science, the importance of trifles in, 44 



Science, the poetry of, 209 



Scientitic societies and elections thereto, 229 



Secret of the North Pole, the, 103 



Sense of direction in man, L'2 



Shaw, Captain, on the liquid fire-proof eyanite, 354 



Shooting stars, 102 



Skertchley, Sydney J. B., F.G.S., lectures on primi- 

 tive man by, 36 



Sleeping accommodation on the Great Southern and 

 "Western Railway Company, Ireland, 456 



Solid carbonic acid, 312 



Sound, velocity of, in air, 490 



Sparkbrook National tricycle, the, and Mr, Richard A. 

 Proctor, 293 



Speed of waves in water, 202 



Steam, use of, to extinguish fire, 248 



Storms and telegraphic conmiunication, 190 



Subterranean fish, 373 



Successful advertising, 214 



Suicide, a singular, 312 



Sun, the atmosphere of the, 166 



Swedenborg Society, meeting of the, 477 



Technical education, 440 



Telegraphic communication between England and 



Scotland, 2U9 

 Telegraphic wires in New York, 375 

 Telegraph, ludicrous explanation of the working of the, 



in China, 248 

 Telegraph messages, number of, in England during 



1883, 304 

 Telegraph offices in Canada, 199 

 Telegraph wire, destruction of, 408 

 Telephone on French railways, the, 5; for divers, 265; 



wires underground, 320; wires in Brazil, 460 ; in 



America, 462 

 Telephonic communication between moving vessels, 



76 

 Telescope, the, and astronomy, 46 

 Thermometer, a negative, 131 

 Tide, observations on thy, 2o2 

 Time-corrector, a, 166 

 Travelling in Abyssinia, 375 

 Trifles in science, the importance of, 44 



Undeegbound wires in France, 73 



United States, the Indian population of the, 131 



A'blocity of sound in air, the, 490 

 Ventilators of the Metropolitan District Railway, re- 

 moval of two of the, 112 

 Vertical steam boiler, bursting of a, 318 



"Water in Anstralia, 137 



"Waves, speed of, in water, 202; the refraction of, 398 



Well-earned praise, 22 



Wilson, Dr. Andrew, lectures on anatomy and 



physiology by, 16, 28 

 "Wire fence telegraph, a, 209 

 Wonderful bicycle ride, a, 398 



ILLUSTRATIOKS. 



Afeica, sketch-map of, 184 



Alisma plantago, the, ti4 



Alisma ranunculoides, the, 114; the alisma natans, 115 



AmiL'ba, diagram of an, 110 



Aphyllanthes Montpeheueis, 386 



Asbasia trichopora, specimens of, under the micro- 

 scope, 143 



Aspirator, diagram of an (a contrivance for collecting 

 dust for microscopic purposes), 51 



Baboubteb, a, in relation to a spectroscopic examina- 

 tion of sunrises and sunsets, 169 

 Boer aerating machine, a, 416 



Bees, diagrams showing fore-wing and tongues of, 53 

 Borage flower, portiou of, 430 

 Bunsen cells, diagram of, 353 

 Butomus umbellatus, the, 176 



Canadian porcupine, the, 56 



Click-beetle {oyriotes ohscurus), 328 



Clustering region of the Milky Way in Cygnus, the, 



144 

 Comet, the, of 1834, 60 

 Comfrey petal, segment of, 430 

 Constellations, map of, 247 

 Corn-weevil, a, 206 

 Cube, perspective of a, 35S 

 Cuckoo-bee parasite, ^iew of a, lOO 



DAMASomrM stellatnm, the, 133 



Day-sign for March, 207 ; for the month, 286, 394, 480 



Diurnal course of the sun, map illustrative of the, 21; 



Double stars, diagram of, 408 



Doultun, pavilion of Messrs., 435 



Doulton sanitary ware, figures of, 476, 477 



Doulton ware stoves, 454, 455 



Drawing the planets, diagrams illustrating methods 



for, 86 

 Drink curve, diagram of the 223 

 Dust on an object-glass, diagram of, 358 

 Dytiscus, heaa of, 474; hind leg of, 475 



Earth, path of, round the sun, diagram of, 41 

 Electrical battery, diagram of one introduced by 



Messrs. Warren de la Rue and Hugo Miller, 412 

 Eicelsior bott ling-machine, the, for aerated water, 417 



False suns, diagram explanatory of, 133 

 Female flower of the thuja aurea, 182 

 Firetail, or golden wasp, view of, 100 

 Fish-scales, diagrams of, 2S2, 283 

 FritUlaria melea gris, 291 



Gagea lutea (field lily), 220 



Galaxy and its fellow star sj'stems, Wright's theory of 



the, 9 

 Gerris lacustris, figure of, 373 

 Glypta luguorina, 245 

 Gyrmus natator, and side view of head of, 414 



Haibs on a wasp's wing. 372 



Hazel pollen (magnified), 182 



Heads of dytiscus and hvdrophilus, 474 



Herschel, Sir AVilliam, diagrams illustrating views and 



observations of, as to the universe of suns in 1784 



and in 1785, 57 

 Herschel, view of, regarding the Milky Way, 145 

 H.tw to make useJul atar-nuips, diaixrams of, 5, 6 

 Hydrometra staguorum, figure of, 373 



Ichneumon, fore-wing of the, 245 

 Ixodes marginatus, rostrum and one mandible of, 473; 

 network in stigma of, i73 



JuNcrs communis, 387 



Jupiter in a three-inch telescope, 126; eclipses of 



satellites of, 127 

 Jupiter, view of, during January, 1884, 101 



Keplee, idea of the universe of 



Lambbet, map showing theory by, of our stellar 



system, a5 

 Lateral amphitheatre of the second order in th© 



Grand Cation, 450 

 Leaf-cutter bee, a (mff/arhlle centuJicufaris), 125 

 Lloydia serotina (a lily verging towards a tulip), 291 



Maes as seen in a three-inch telescope, 140 



Mars, the path of, relatively to the earth during the- 



opposition period of lfiS4, 8 

 Mars, the planet in relation to the earth, diagrams of, 



71,72 

 Meteor, diagram of the course of a, 151 

 Microscopic objects, groups of, 52 

 Alilky Way, the, clustering region of, in Cygnus, 144 



Naucobis cimicoides, 450 



Niagara, a cantilever bridge over, 227 



*'>'iagara" condenser, the, for the aeration of 80da 



and other waters, 417 

 Xight-sign for the month, the, 237, 331, 395, 481 

 Nut-weevii, head of, 160 



Occultation of the moon, 269 



Ophideres, probosces of, 330 



Optical illusion, diagrini of an. 170 



Optical recreations, figures illustrative of, 306, 39C^, 



391,436, 4;}7, 480 

 Organisms in a hailstone, 423 

 Ornithorhynchus, figure and skeleton of, 269 

 Oscillations of light, diagrams of, 352 

 Oiyhydrogen lamp, diagram of two forms of, 209 



Paths of Mars, Earth, Venus, and Mercury, 310; ef 

 Xeptune, Uranus, Saturn, and Jupiter, 311 



Pendulum experiments (Foucault's), diagrams illus^ 

 trative of, 413 



Perspective, diagrams of imaginary false, 422 



Pezomachus transfuga, figure of (ichneumon), 28S 



Plastering-bee, the tongue of a, 125 



Polarisation, diagrams illustrative of, 74 



Porcupine, the Canadian, 56 



Ror£-B£ETLB5, four figures illustrative of, 27 



Saccharomtces cerevisife (the yeast-plant), 415 



Sagittaria sagittifolia, the, 175 



Saturn, a view of, 185 



Scintillometer, a, 180, 181 



Sitones Uneatus, figure of, 160 



Star-maps, diagrams of, 36, 37, 111. 146, 147 



Stylops, view of a male species of, 100 



Sunspot, diagram of a, 4^1 



Tausus and Orion, diagram showing double stars lo, 

 14 



Telephone, figures illustrative of the, 12S, 129 



Thuja aurea, female flower of the, 182 



Trachelomonad. diagram of, 110 



Trichiui^, two figures of, under the microscope, one 

 showing cyst \r\ih coiled-up worm and the other 

 the worm out of cyst and uncoiled, 21 



Tricycle accident, representation of, 73 



Tri^lochin palustre. the, 138 



Tulipa gesneriana (the garden tulip), 290 



Univbese of suns, the, diagram referring to, 96, 432 

 Uranus, view of, March 16, 1884, 199 

 Usnea barbata, section of a slender branch of, aa seea 

 under the microscope, 83 



Velia currena, figure of, 414 



Wibewobm:, a (magnified), 327 



Zelb teataceator, fore-wing of, 288 



Zodiacal signs for February, with the paths of Mars 



and Jupiter in 1834, 70, 87, with the path of 



Uranus in 1384, 165 



