Chapter II: CHEMISTRY.--On the Mydriatic Alkaloids. By ALBERT LADENBERG

--I. Atropine.--II. The Atropine of Datura Stramonium.
--III. Hyoscyamine from Hyoscyamus.

Detection of Small Quantities of Morphia. By A. JORISSEN.

The Estimation of Manganese by Titration. By C. G. SARNSTROM.

On the Estimation and Separation of Manganese. By NELSON
H. DARTON.

Delicate Test for Oxygen.

Determination of Small Quantities of Arsenic in Sulphur. By H.
SCHAEPPI.