Heat developed in Forging.
Recent Studies on the Constitution of Alkaloids.--Extract from
a lecture delivered before the Philadelphia College of Pharmacy.
--By SAML.P. SADTLER.
II. ENGINEERING AND MECHANICS.--Apparatus for Extracting
Starch from Potatoes.--With engraving.
A Simple Apparatus for describing Ellipses.--By Prof. E.J.
HALLOCK. 1 figure.
A Novel Propeller Engine.--With full description and numerous
engravings.--By Prof. MACCORD.
The New Russian Torpedo Boat, the Poti.--With engraving.
A New Steamer Propelled by Hydraulic Reaction--Figures showing
plan and side views of the steamer.
A New Form of Flexible Band Dynamometer.--By Prof. W.C.
UNWIN. 4 figures.
III. TECHNOLOGY.--Enlarging on Argentic Paper and Opals.--By
A. GOODALL.
The Manufacture and Characteristics of Photographic Lenses.
Improved Developers for Gelatine Plates.--By DR. EDER.
The Preparation of Lard for Use in Pharmacy.--By Prof. REDWOOD.
Anti-Corrosion Paint.
Manufacture of Charcoal in Kilns.--Different kilns used.
IV. ART, ARCHITECTURE, AND ARCHÆOLOGY.--The German
National Monument.--With two engravings of the statues of
Peace and War.
The Art Aspects of Modern Dress.
Artisans' Dwellings, Hornsey, London.--With engraving.
Discovery of Ancient Church In Jerusalem.