nt in quantity, because the flame would be far
too large to cast a sharp shadow.

In these hints, which have in themselves required a rather formidable
chapter, I have given all the details, so far as I am able, which a
considerable experience has shown to be necessary for the successful
performance or the experiments in public. The hints will I hope
materially assist those who are not in the habit of carrying out
experiments, but who may wish to perform them for their own
satisfaction. Though people who are not experimentalists may consider
that the hints are overburdened with detail, it is probable that in
repeating the experiments they will find here and there, in spite of all
my care to provide against unforeseen difficulties, that more detail
would have been desirable.

Though it is unusual to conclude such a book as this with the fullest
directions for carrying out the experiments described, I believe that
the innovation in the present instance is good, more especially because
many of the experiments require none of the elaborate apparatus which so
often is necessary.

THE END.

_Richard Clay & Sons, Limited, London & Bungay._

[Illustration: Fig. 35

THAUMATROPE for showing the formation and oscillation of drops.]

End of the Project Gutenberg EBook of Soap-Bubbles, by C. V. Boys

*** END OF THIS PROJECT GUTENBERG EBOOK SOAP-BUBBLES ***

***** This file should be named 33370.txt or 33370.zip *****
This and all associated files of various formats will be found in:
http://www.gutenberg.org/3/3/3/7/33370/

Produced by Chris Curnow, Josephine Paolucci and the Online
Distributed Proofreading Team at http://www.pgdp.net. (This
file was produced from images generously made available
by The Internet Archive.)

Updated editions will replace the previous one--the old editions
will be renamed.

Creating the works from public domain print editions means that no
one owns a United States copyright in these works, so the Foundation
(and you!) can copy and distribute it in the United States without
permission and without paying copyright royalties. Special rules,
set forth in the General Terms of Use part of this license, apply to
copying and distributing Project Gutenberg-tm electronic works to
protect the PROJECT GUTENBERG-tm concept and trademark. Project
Gutenberg is a registered trademark, and may not be used if you
charge for the eBooks, unless you receive specific permission. If you