Table of contents


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Departments

Correspondence

Correspondence p181

doi:10.1038/scientificamerican09221888-181


Business and Personal

Business and Personal p186

doi:10.1038/scientificamerican09221888-186b


Notes and Queries

Notes and Queries pp186 - 187

doi:10.1038/scientificamerican09221888-186c


Index

Index of Inventions pp187 - 188

doi:10.1038/scientificamerican09221888-187a


Patent Notes

Patents p190

doi:10.1038/scientificamerican09221888-190


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Articles

Compressed Steel Car Wheels p175

doi:10.1038/scientificamerican09221888-175


What is the Best Insulation? p176

doi:10.1038/scientificamerican09221888-176


Additional Postal Facilities Needed pp176 - 177

doi:10.1038/scientificamerican09221888-176a


An Improved Punch for Bank Checks, Etc p179

doi:10.1038/scientificamerican09221888-179


Improved Electrical Shoal Water Indicator p179

doi:10.1038/scientificamerican09221888-179a


An Improved Cartridge Shell Cutter p179

doi:10.1038/scientificamerican09221888-179b


An Improved Stop and Waste Faucet p179

doi:10.1038/scientificamerican09221888-179c


An Improved Coal Chute p179

doi:10.1038/scientificamerican09221888-179d


An Improved Tobacco Pipe p180

doi:10.1038/scientificamerican09221888-180


An Improved Store Service Apparatus p180

doi:10.1038/scientificamerican09221888-180a


A Finger Shield for Musicians p180

doi:10.1038/scientificamerican09221888-180b


An Improved Cut-Off Valve Gear p180

doi:10.1038/scientificamerican09221888-180c


An Improved Letter Box Door Plate pp180 - 181

doi:10.1038/scientificamerican09221888-180d


A Gunboat for the Great French Exposition pp182 - 183

doi:10.1038/scientificamerican09221888-182


An Improved Pug Mill p183

doi:10.1038/scientificamerican09221888-183


An Improved Drill Grinder p183

doi:10.1038/scientificamerican09221888-183a


An Improved Rail Punch pp183 - 184

doi:10.1038/scientificamerican09221888-183b


Photographic Notes p184

doi:10.1038/scientificamerican09221888-184


Simple Experiments in Physics p185

M. Hopkins

doi:10.1038/scientificamerican09221888-185


Engineering Inventions p186

doi:10.1038/scientificamerican09221888-186


Miscellaneous Inventions p186

doi:10.1038/scientificamerican09221888-186a


To Inventors p187

doi:10.1038/scientificamerican09221888-187


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