Improved Excavator - p271

doi:10.1038/scientificamerican04291871-271

PDF (419 KB)

Colors of the Sea - pp271 - 272

doi:10.1038/scientificamerican04291871-271a

PDF (565 KB)

Tilghman's Process of Cutting Hard Substances - p272

Coleman Sellers

doi:10.1038/scientificamerican04291871-272

PDF (159 KB)

Something about Seeds - p273

W. W. Bailey

doi:10.1038/scientificamerican04291871-273

PDF (156 KB)

Cochineal Insects and their Allies - p274

E. C. H. Day

doi:10.1038/scientificamerican04291871-274

PDF (344 KB)

Holding and Mixing Machines, used by the Union Stone Company—The Sorel Process of Manufacturing Artificial Stone - p275

doi:10.1038/scientificamerican04291871-275

PDF (294 KB)

Mortar Light - p275

doi:10.1038/scientificamerican04291871-275a

PDF (294 KB)

Cope & Maxwell's Upright Boiler Feeder - pp278 - 279

doi:10.1038/scientificamerican04291871-278

PDF (490 KB)

Proposed Changes in the British Patent Laws - p279

doi:10.1038/scientificamerican04291871-279

PDF (213 KB)

Canal Navigation - p279

doi:10.1038/scientificamerican04291871-279a

PDF (213 KB)

Roofs and Roofing - pp279 - 280

doi:10.1038/scientificamerican04291871-279b

PDF (314 KB)

Mining Schools in the United States - p280

doi:10.1038/scientificamerican04291871-280

PDF (128 KB)

Uses of Infusorial Silica - p280

doi:10.1038/scientificamerican04291871-280a

PDF (128 KB)

Carbolic Acid - p280

doi:10.1038/scientificamerican04291871-280b

PDF (128 KB)

Scientific Intelligence - pp280 - 281

doi:10.1038/scientificamerican04291871-280c

PDF (242 KB)

Editorial Summary - p281

doi:10.1038/scientificamerican04291871-281

PDF (153 KB)

Answers to Correspondents - p282

doi:10.1038/scientificamerican04291871-282a

PDF (209 KB)

Queries - p282

doi:10.1038/scientificamerican04291871-282c

PDF (209 KB)

Recent American and Foreign Patents - pp282 - 283

doi:10.1038/scientificamerican04291871-282d

PDF (409 KB)

Applications for Extension of Patents - p283

doi:10.1038/scientificamerican04291871-283

PDF (271 KB)

Official Lists of Patents - pp283 - 284

doi:10.1038/scientificamerican04291871-283a

PDF (564 KB)