SCIENTIFIC AMERICAN SUPPLEMENT NO. 1178

NEW YORK, JUNE 25, 1898.

Scientific American Supplement. Vol. XLV., No. 1178.

Scientific American established 1845

Scientific American Supplement, $5 a year.

Scientific American and Supplement, $7 a year.


TABLE OF CONTENTS.
PAGE.
I.[ARCHÆOLOGY.—Tombs of the First Egyptian Dynasty—ByLudwig Borchardt]18767
II.[ANTHROPOLOGY.—The Milestones of Human Progress]18766
III.[BIOGRAPHY.—The Queen Regent and Alfonzo XIII.—1 illustration]18755
IV.[BOTANY AND HORTICULTURE.—Rose Psyche—1 illustration ]18768
V.[CIVIL ENGINEERING.—The Lock of the Dortmund-Ems Canalat Henrichenburg.—1 illustration]18776
VI.[ELECTRICITY.—The Development of the Central Station—By Samuel Insull]18774
VII.[MARINE ENGINEERING.—Steering Gear of North German Lloyd Steamers "Coblentz," "Mainz" and"Trier."—2 illustrations ]18777
VIII.[MEDICINE AND HYGIENE.—Sleep and the Theories of its Cause]18768
IX.MISCELLANEOUS:
[Engineering Notes.]18771
[Electrical Notes. ]18771
[Selected Formulæ. ]18771
X.[NATURAL HISTORY—Wild and Domestic Sheep in the Berlin Zoological Garden.—8 illustrations ]18772
XI.[PATENTS.—Patents.—By James W. See]18773
XII.[PHOTOGRAPHY.—Amateur Chronophotographic Apparatus.—2 illustrations]18769
XIII.[STEAM ENGINEERING.—Combined Steam Pumping and Motive Power Engine.—1 illustration]18778
XIV.[TECHNOLOGY.—The Reclaiming of Old Rubber.—By Hawthorne Hill]18769
XV.[WARFARE.—The American "Regular."—By the English correspondentof the London Times on board the United States transport "Gussie." ]18776