The Painless Slaughtering of Animals-Utilisation of Slate Debris-Imitation of Sea-water- Isthmus of Panama Schemes- Scottish Geographical Society- Carbonic Acid as a Fire-extin- guishing Agent-Heating of Rail- way and Tram Cars-Pneumatic Tubes for Telegraphic Purposes- Adulteration of Drugs-Smoke Abatement-Weather-signals - Electric Lighting in America- Water-marks-Lochleven Trout 74-77 Agriculture in India-Beet Sugar-factory Protection of Buildings from Earthquake Shocks-Suppression of Injurious Insects-Milk-tester-Milk-adul- teration-Fish as a Manure- Fireproof Fixing-block-Water- purification-Output of Coal- Fatal Accidents in Coal-mines- Arsenical Wall-papers-Compara- tive Weight of Salmon in Prin- cipal Rivers-Arrival of Trout- eggs in United States-Effect of Fog on the Arc-light, 139-142
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