of the Missouri River
II. BIOLOGY.--New Observations on the Language of Animals.--By
M. DE LACAZE DUTHIERS.--A lengthy examination of some facts
in the language of animals, including birds and quadrupeds

III. BOTANY.--Electricity in Agriculture.--By CLARENCE D. WARNER.--The
effect of currents of electricity upon the germination of seeds.
--Interesting experiments detailed, which can be easily repeated

Electricity in Horticulture.--The effect of the electric light on
vegetation, availability it may possess for the gardener

Pentapterygium Serpens.--A Himalayan flowering plant introduced
in England about ten years ago.--2 illustrations

The Perforation of Flowers.--What insects do to promote the
propagation of plants by perforating the flowers in search of
honey.--16 illustrations

IV. CHEMISTRY.--A New Laboratory Process for Preparing Hydrobromic
Acid.--By G.S. NEWTH.--Simple synthesis of hydrogen
and bromium

Boron Salts.--Boron sulphides and selenides and silicon selenide

Detection of Peanut Oil in Olive Oil.--A practical laboratory
test for the above adulteration

Hydroxylamine.--Recent preparation of this compound and its
properties