I. CHEMISTRY AND METALLURGY.--Beeswax and its Adulterations.
--Chemical ingredients.--Detection of adulterations. 7064
Phenol in the Stem, Leaves, and Cones of Pinus Sylvestris.
--A discovery bearing on the flora of the Carboniferous
epoch and the formation of petroleum. 7065
The School of Physics and Chemistry of Paris.--With
engraving of laboratory. 7065
Some Relations of Heat to Voltaic and Thermo Electric
Action of Metals in Electrolysis.--By G. GORE. 7070
II. ENGINEERING, MECHANICS, ETC.--Air Refrigerating
Machine.--5 figures. 7071