Africa crossed again 193 Aluminum 197 Barometer, aneroid 201 Bolt, door, improved* 198 Bread, snow-raised 199 Buffalo, domestication of the 197 Carpet beetle, remedy for the 195 Chimney flues 198 Clocks, pneumatic 196 Cooper, Peter, as an inventor 193 Crusher, ore, novel* 194 Electricity, statical, phenom. in 194 Flour, banana 195 Furnace, imp., for burn'g garbage* 198 Hardware, English & American 201 Ice cave of Decorah, Iowa 196 Inventions, new agricultural 199 Iron, advance in 201 Light, albo-carbon 201 Magnetism, curious facts in 194 Motor, Gary, the* 196 Natural science, charms of 200 Neutral line, Gary's 196 Notes and queries 203 Patent laws 192 Patents, American, recent 194 Pen, stencil, new* 195 People, a strange 195 Phosphorescence 199 Plants protected by insects 201 Pleuro-pneumonia 192 Railway, Vesuvius 200 Reading and eyesight 199 Reading, taste for 193 Regulator, engine, novel* 195 Spain a field for machinery 193 Sponges, glass* 200 Table, ironing, new* 194 Telegraph, writing 196 Telegraph, writing, Cowper's 197 Telegraphy, ocean, progress of 195 Tiller, steam, new* 191 Tree, pottery 200 Vase, Greek, ancient* 199 * * * * * TABLE OF CONTENTS OF THE SCIENTIFIC AMERICAN SUPPLEMENT NO. 169, FOR THE WEEK ENDING MARCH 29, 1879.