risTDEX TO VOLUME XXIV. 
Oxygen Apparatus, Explosion of 41 
Oxygen, Atomic Weight of 41, 153 
Oxygen , Easy Preparation of 1-' 
Oxygen ( »as. To Prepare Safely 1^*- 
Oxygen. Ordinarv' Actions of l(>r> 
Paper Pulleys If'ti 
Paper, To Waterproof ST* 
Paris Letter 26, 69, 90, 123, 155, l!^ 
Pasteur Institute, New York 175 
Patent Medicines. Some Old Tifi 
Pearl, The f.« 
Pendulum Experiment in Earth's Motion 1H4 
Periodic System , The 1 
Pestle Handles, Cement for 181 
Petrifactions and Fossils 102 
Pharo-Light, A New 84 
Phcenicians. Modern F^nglish Descendants of 73, 148 
Phonograph as an Acoumeter , 9(5 
Phonograph. Improvement in the 4 
Phosph()rus, TWo Forms of G9 
Photographs. Ink for Writing on ll*i 
Photography 4*1 
Photography Abroad 120 
Photography for Deciphering Writing ll*i 
Photography, Instantaneous, Recent Improvements in 7fl 
♦Photography, Novelties in 20 
Photography for Physicians 157 
Photographic Amateurs, Hints to 85 
Photographic Films ItW 
Photographic Points, Practical 40 
Photometric Balance 179 
Phthisis in Switzerland 04 
Pigments, Our Common 117 
Pile Dwellers 104 
Pills, Chinese 32 
Pinholes in Platinum, To Solder - - ■ ■ 150 
Pipes, Tarred 16*> 
Plants for Shady Places 179 
Plants, Hot Water *. 2() 
•Pneumatics, Curious Experiment in 113 
Poison , African Arrow 121 
Practical Recipes l(i*i 
Prescription , A Unique .' 32 
Proto-Helveles. The - 17, 34, 51 
Proverbs, Old, F'rom a Scientific Standpoint 25 
Questions and Answers 12,29,45, 92, 109, 125, 140, 104, 190 
Quinine Sulphate, Non-actinic Property of . ^ 26 
Railroad Tariff, A Novel 68 
Railway, A Remarkable 134 
FAGK, 
Railways, Japanese 70 
Railway Systems, Future Extent of 73 
Railway Ties. Steel 150 
Ranunculus, Double, Traced by a Stream of Water 55 
Recipes, Practical 85 
Respiration, Artiticial, New Instrument for 78 
Ring Finger, Increasing Mobility of 142 
Robins, Colorado. A Pair of 72 
Rock Inscriptions. Swedish, Prehistoric 42 
Roofing Material, A New 52 
Rope, Cork HO 
Rosetta Stone, The 35 
Rubber Pavements 181 
Rust, To Prevent 84 
Saccharin in Belgium 112 
Salicylic Acid as a Food Preservative 137 
.Scale in Boilers 70 
Science, Assumptions of 57 
Science, Twenty Years of ■ 20 
Scientific Brevities 4, 20, 3(), 52, 84, 110. 1.32. IW. 79 
•Scientific Experiments, Simple fv^, 97, 113 
•Scientific Recreations 2,81, 145 
•Scientific Station, Highest in Europe 170 
•Seed Planter, A Chinese *■ 85 
Semitic Races, Place of < >rigin 73 ■ 
•Sepulchre, An Ancient 178 
Shingle Paint - lOti 
Siberian Railway, The 101 
Silver '. 180 
Silver, To Detect , in Presence of Lead 70 
Sleep 46 
Smoke Machine 181 
Snail, The 171 
Snakes Swallowing Their Young 134 
Soap, Blue 70 
Sodic Carbonate, Manufacture of 149 
Specialism in Medicine 174 
•Spiders, Two Remarkable 177 
•Spider Webs : How Spun 101 
Sponges, Artificial. Industry in 4 
Spring Prelude. The 72 
Star, A Variable 30 
Starfish, The 138 
Statue , A Double 26 
.Steamship, A Novel 169 
Steamship Racing on the Atlantic Ocean 105 
Steel. Crushed - 130 
.Steel, Hydrogen Occluded in 22 
Stellar Motions, Spectroscopic Analysis of 178 
Stencil Ink '• 106 
Stomach Brush, The 15 
|-,\i.K. 
.Stomach, Hair Halls from 10 
Sulph\ir, Affinity of Metals for 179 
Summary of itledical Progress (monthlv) 14. 31, 4(>. 0,'(. 79. 
' . 110, 127, 14::. 100. 17.-.. 191 
Sunnner Schools. SK 
Tariff "Bill, Effect upon Science 185 
Telegraph, ( )ptical 121 
Telephone, New Application of 181 
Telephony, State 5.3 
TheiyfihotniSy Giganteus, Notes on I.'i4 
Thermometer, An Expensive o(KI 
Thermometer, Scales 4 
Thioketone 121 
Thinider Storm, Winter 57 
Trance, State of S4 
Transparencies in Prussian Blue 5 
•Tree, A Curious 140 
Tuberculosis, Transplanting i*0 
Tube Press, Hydraulic 1 18 
Ultramarine - 37 
Va-seline and .Soluticms, To Mix 04 
Vertebrata, The 187 
Vitality lOi) 
Vivisection 137 
War Rocket, A New i;!4 
Warts 2!> 
Waterproofing Cloth 181 
•Water Still, A Simple W 
Water Supplv, Pollution of 137 
Waves. Heig'ht of 120 
Wave Power, Cause of. .'>7 
Well, (las. Fresh and Salt Water Combined 20 
Wesley, John, Medical Talk by 01 
WJiite Lead, Wet Process for Alanufacturing liiO 
Wild Roses 120 
Winter Cough, Ammonium Chloride in .'JO 
Winter Weather. Unusual 25 
Women in Pharmacy iH 
Woods in Winter, The 30 
•Writing in Railroad Cars, I )evice for .■>7 
Yellow Fever, <Iin as a Remedy for 10.") 
Ye Olden Time 22 
Zinc 22 
Zinc in Artesian Well-water I8r> 
Zinc, Native Metallic 2 
