EBOOK SCIENTIFIC AMERICAN SUPPLEMENT, NO. 385 ***
Produced by Don Kretz, Juliet Sutherland, and Distributed Proofreaders
[Illustration]
SCIENTIFIC AMERICAN SUPPLEMENT NO. 385
NEW YORK, MAY 19, 1883
Scientific American Supplement. Vol. XV., No. 385.
Scientific American established 1845
Scientific American Supplement, $5 a year.
Scientific American and Supplement, $7 a year.
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TABLE OF CONTENTS.
I. NATURAL HISTORY.--Fishes of Cuban Waters.
Panax Victoriae.--1 Illustration.
A Note on Sap. By Prof. ATTFIELD.
The Crow.--Illustration.
The Praying Mantis and its Allies.--Illustration.
May Flies.--2 illustrations.
II. TECHNOLOGY.--A Quick Way to Ascertain the Focus
of a Lens.--1 diagram.
The History of the Pianoforte. By A.J.
HIPKINS.--Different parts of a pianoforte and
their uses.--Inventor of the instrument and his
"action."--First German piano-maker.--Square
pianos.--Pianos of Broadwood, Backers, Stodart,
and Erard.--Introduction of metal tubes, plates,
bars, and frames.
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