The Project Gutenberg EBook of Scientific American Supplement, No. 841,
February 13, 1892, by Various

This eBook is for the use of anyone anywhere at no cost and with
almost no restrictions whatsoever. You may copy it, give it away or
re-use it under the terms of the Project Gutenberg License included
with this eBook or online at www.gutenberg.net

Title: Scientific American Supplement, No. 841, February 13, 1892

Author: Various

Release Date: February 27, 2005 [EBook #15193]

Language: English

Character set encoding: ASCII

*** START OF THIS PROJECT GUTENBERG EBOOK SCIENTIFIC AMERICAN ***

Produced by Juliet Sutherland and the PG Online Distributed
Proofreading Team at www.pgdp.net.

[Illustration]

SCIENTIFIC AMERICAN SUPPLEMENT NO. 841

NEW YORK, FEBRUARY 13, 1892

Scientific American Supplement. Vol. XXXIII, No. 841.

Scientific American established 1845

Scientific American Supplement, $5 a year.

Scientific American and Supplement, $7 a year.

* * * * *

TABLE OF CONTENTS.

I. ANTHROPOLOGY.--Investigation of a Mound near Jefferson
City, Mo.--By A.S. LOGAN.--Prehistoric remains from the banks
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