NEW YORK, JUNE 25, 1898. Scientific American Supplement. Vol.
THE QUEEN REGENT AND ALFONZO XIII.
THE MILESTONES OF HUMAN PROGRESS. 1
TOMBS OF THE FIRST EGYPTIAN DYNASTY. 1 By LUDWIG BORCHARDT,
ROSE PSYCHE.
SLEEP AND THE THEORIES OF ITS CAUSE.
AMATEUR CHRONOPHOTOGRAPHIC APPARATUS.
THE RECLAIMING OF OLD RUBBER. By HAWTHORNE HILL.
ENGINEERING NOTES.
ELECTRICAL NOTES.
SELECTED FORMULAE.
WILD AND DOMESTIC SHEEP IN THE BERLIN ZOOLOGICAL GARDEN.
PATENTS. 1 By JAMES W. SEE, Hamilton, Ohio, Member of the Society. EMPLOYERS' RIGHTS.
THE DEVELOPMENT OF THE CENTRAL STATION. By SAMUEL INSULL. 1
THE LOCK OF THE DORTMUND-EMS CANAL AT HENRICHENBURG.
THE AMERICAN "REGULAR." BY THE ENGLISH CORRESPONDENT OF THE
STEERING GEAR OF NORTH GERMAN LLOYD STEAMERS "COBLENTZ," "MAINZ," AND "TRIER."
COMBINED STEAM PUMPING AND MOTIVE POWER ENGINE.
Recent Books.
ELECTRICAL LIBRARY
Scientific American Supplement.
BUILDING EDITION
