CONTENTS. 



Lepidoptera, Pictures of, 32, 316 

 Libraries, List of Private, 212 

 Life, Nature of, 11, 74, 135, 231 

 Lightning, Vagaries of, 127 

 Living Molluscs, An Exhibition of, 2-1 

 Llanberis Pass, Sceneiy of, 161 

 London Field-Botany Club, 23, 55 

 Luminosity of Colours, Measurement of. 



311 

 Lungwort in Hants, 23 

 Lycaena Baetica, Larvae of, 159 

 I.\ nmouth, Birds at, 41 



,, District, Mosses of, 99 



Malaria and Mosquitoes, 151, 255 



" Man," New Anthropological Journal, 



239 

 Marine Algae, 314 

 Mathematics, 242 

 Membracidae, Monograph of, 182 

 Men of Science, Honours for, 17 

 Microscope and Microscopy, The, 247 

 Microscopy — 



Alcyonium palmatum, Polyp of, 215 



Amoebal, Mounts of, 372 



Answers to Correspondents, 213,245,314, 



344 

 Aphis with Young, 119, 120 

 A rtemia, Story of, Retold, 151 

 Auricula, Epidermis of Leaf of, 246 

 Bacteria, Examining, 247 



in Water, 245, 246 

 Balanus, Development of, 184 

 Catalogue, Bausch & Lomb's New, 244, 

 282 ; C. Baker's New, 183 ; W. Watson 

 & Sons' New, 214 

 Clothes-moth, Scales of, 245 

 Cockchafer, Antennae of, 246 

 Condensers, J. Swift & Son's, 244 

 Cover-glass Gauge, New, 60 

 Crustaceans, Notes on, 282 

 Dendrite on Limestone, 372 

 Diatoms, 284 



Dytiscus marginal's, Paddle-leg of, 246 

 Earthworms, Regeneration in, 151 

 Entomostraca, Freshwater, 244 

 Foraminifera, Floating, 372 

 Formaldehyde as a Killing and Fixing 



Agent, 313 

 Formalin as a Preservative, 118, 351 

 „ and Alcohol as a Preservative, 

 313 

 Freshwater Faunae, Nature and Origin 



of, 282 

 Fungi in Glycerine, Method of Mount- 

 ing, 59 

 Gnat, Development of, 344 

 Humble Bee, Parasite from, 120, 121,183 

 Immersion Objective, New J^-inch, 314 ; 



Beck's New ,^-inch, 28 

 Insects, Role of, as Carriers of Disease, 



151 

 Lemon Tree, Scale from Leaf of, 119 

 Lepidoptera, Ova of, 89 

 Lianas, Sections through Stems of Bra- 

 zilian, 372 

 Limestone, Section of, 28 

 Lycopodium clavatum, Prothallinm of, 28 

 Maceration Medium for Vegetable Tis- 

 sue, New, 314 

 Malaria and Mosquitoes, 151, 183 

 Manchester Microscopical Society, 118 

 Marine Algae. 314 

 Medusae. Preservation of, 215 

 Microscope. Baker's Plantation, 88 

 R.M.S. 1.27, 89 

 Bausch & Lomb's "B.E.." 343 

 R. & J. Beck's New " Lon- 

 don," 184 

 „ Ross's New ' : Standard," 283 



„ Swift's New Bacterio- 



logical, 28 

 Swift's New Portable, 118 

 ,, Mechanical Stage for Dia- 



gnostic, 151 

 Mosquitoes and Malaria. 151, 183 

 Mounting in Glycerine, 343 

 Paraffin Infiltration, Method of, 343 

 Plants, Number of Species of, 214 

 Podura and Other Scales, 152 

 Postal Microscopical Society, 88, 313 

 Quekett Microscopical Club, 342 ; Journal 



of, 59, 282, 344 

 Rotifera, Method of Preserving and 

 Mounting, 88 



Microscopy — continued. 



Royal Microscopical Society, 59,119.214, 



244, 282, 313, 342, 371 

 Sheep-tick Imago, 119 

 Sheffield Microscopical Society, 342 

 Stearine and Naphthaline Imbedding, GO 

 Steel Rails, Causes of Fracture of, 214 

 Tipula, Ovipositor of, 120, 121 

 Tubercle in Human Spleen, 246 

 Vegetable Tissue, New Maceration 



Medium for, 314 

 Weevil, Common, Disjecta Membra of, 120 

 Wild Bee, Ovipositor of, 120 

 Wood Sections, Preparing, 60 

 Zoological Specimens, Formalin and 

 Alcohol as Preservatives for, 313 



Microscopy for Beginners, 29, 61, 90, 121, 

 154, 186, 216, 247 



Micro-organisms, Colouring of Water by, 

 332 



Millport Marine Biological Station, Report 

 for 1899, 22 



Mollusca, 20 ; of Hampshire, Land and 

 Freshwater, 301, 338, 362 ; of South Sur- 

 rey, 95 ; Scientific Investigation of, 286 



Molluscs Shells, On Colouring of, 97, 145 

 „ Exhibition of Living, 24 



Monochromatic Vision, 218 



Museum, Mr. Horniman's, Presented to 

 L.C.C., 312 



Mycological Society, British, Transactions 

 of, 91 



National Park, Another, in North America, 

 311 

 ,, Physical Laboratory, 24 

 ., Scientific Repository, 20, 55 



" Natural Science Gazette " in Hand- 

 writing, 311 



" Nature Study Bulletins," 212 



New Forest, Hydrachnidae in the, 133; 

 Pond Life in the, 132 



New or Temporary Star, 321 



Newt, Life of a Pet, 260 



Nobel Bequest, 164, 195 



North London Natural History Society 

 Balance-sheet, 22 



Norway, Climate of, 279 



Notes and Queries, 24, 54, 95, 127, 159, 191, 

 218, 254, 279, 351 



Obituary — 



Anderson, Dr. John, 122 



Anton, Dr. Ferdinand, 220 



Atkinson, Dr. Edmund, 22 



Bros, W. Law, 212 



Chatin, Adolphe, 311 



Crowley, Philip, 239 



Farnham, Lord, 212 



Gray, Elisha, 312 



Kee'ler, Professor, 158 



Kingsley, Miss Mary H., 55 



Lawes, Sir John Bennet, Bart., 129 



Leech, John Henry, 278 



Selys-Longchamps, Baron Michel Ed- 

 mond de, 311 



Sidgwick, Professor Henry, 1 50 



Simpson, Professor Pierce Adolphus, 122 



Staudinger, Dr., 182 



Stokes, Sir William, 107 



Victoria, Queen, 275 



Watkins, William, 55 



Williams. Herbert, 311 

 Observations on Clouds in 1901, 212 

 Observatory, Biera, Milan, 255 

 Orange Elver Colony, Geological Notes in. 



33, 103, 134 

 Orchis, New, 159 

 Ornithology in Australia, 312 



Pacific Ocean Mystery, 283 



Palaeolithic Man in the Valley of the 



Wandle, 09, 177 

 Paludestrina jenkinsi, 286 

 Parental Relationship, 175 

 Paris Exhibition Awards, 150 

 Phonetics and Ethnology, 32 

 Photographic Salon, The, 160 

 Photography — 



Catalogue, Thornton Pickard. 377 



Christmas Cards, Photographic, 213 



Cloud Negatives, 377 



Diary, Photographic, 309 



Exposure Table, 252, 276. 309. 348, 377 



Gaslight, Printing by. 252 



Photography — continued. 



Hampstead Scientific Society, 309 



Kamniatograph, 233 



Lantern Slides, 213 



National Photographic Record Associa- 

 tion, 252 



Negatives. Fading, 27G 



Novelties,' 348 



Photographic Convention of the United 

 Kingdom, 276 



Photographic Wave Studies, 225 



Questions and Answers, Photographic, 21 3 



Royal Photographic Society, 188, 309, 3 I - 



Snow Pictures, 276 



Telephoto Lenses, 348 



Toning Bath for P.O.P., 276 



Toning Solution, 213 : Uranium, 213 



Velox Paper and Developing Cartols, 213 

 Photography for Beginners. 253, 277. 310 



349, 378 

 Photography of Colour, 65, 108, 163 

 Physical Laboratory, Owens College, S3 

 Physics— 



Air, Expansion of, 1 23 



Atmospheric Electricity, 190 



Becquerel Rays, 222 



Birmingham, University of, 123 



British Association, Physics at, 155 



Electricity and Engineering, Relations 

 between, 30 



Saltan's Whistles, 190 



Induction Coil Condensers, 94 



Interrupter, Wehnelt, 123 



Kew Observatory, 222 



Lichtenberg Figures, 56 



London, Physical Society of. 94. 222 



Magnetic Flag, A Revolving. 94 



Metals, The Structure of, 56, 94 



Meteorology, Kites and Balloons in, 56 



Nineteenth-century Clouds over Physics. 

 30 



Paris Congress, 56 



Paris, Electric Tramways in, 56 



Photographic Plates, Electrical Dis- 

 charges upon, 123 



Radio-active Bodies, 190 



Rbntgen Rays, 190 



Roval Society, The, 30 



Society of Arts, 30 



Space Telegraphy. Simple Relay for, 222 



Spark Discharge, Wavy, 123 



Telegraph, New Typewriting, 30 



Telephonograph, The, 30 



Telephony over Telegraph Line-. 190 



Wave-motion Model, 123 



Wireless Telegraphy, 30, 222 



Wires, Extension of, 190 



X-ray Localiser, A New, 56 

 Pieris rapae, Larva in January. 31 1 

 Pigeon Post, 229 

 Plant Life, Enigmas of, 140 



„ Names, Irish, 81,' 147, 306 

 Plants, Formalin as a Preseiwative for, 357 

 „ Nature Pictures of, 64 

 „ of South Hants and Dorsetshire, 23 

 „ Spirals in, 226 

 Pond Life in the New Forest, 132 

 Postal Microscopical Society, Extracts 



from Note-books, 119. 152,184,215 245 



284, 314, 344, 372 

 Potamogeton rutilus in Sussex. 23 

 Professor's Petrie's Scheme. 49 

 Primus cerasifera, New to Britain, 23 



Quaker Contributions to Nineteenth Cen- 

 tury Literature, 239 



Radcliffe Observatory. Telescope for, 2o2 



Rainfall in Britain. 236 



Rain-gauge, New Self-registering. 55 



Rare Birds, Protection of, 20 



Relation of Parent to Offspring, 251 



Reptiles in Winter, 300 



'- Riddle of the Universe." 208 



Royal Institution, 255 : Hull, Appointment 

 of Curator. 275 



Royal Meteorological Societv, Report for 

 1900, 275 



Royal Society Medals, 239 ; Society Pre- 

 sident, 239 



Salicornia appressa in Sussex. 23, 329 

 Salt, U se of, for Health, 312 

 Sap, Mechanics of Conduction of, 305 

 Scheme. Professor Petrie's, 49 



