* * * * *

TRANSCRIBER'S NOTES

1. Simple and obvious typographical errors have been corrected.

2. In the article "Manufacture of Photosensitive Plates", the original
text referred to room U twice. The first instance has been changed
to room T.

3. In the article "An Improved Screw Propeller", the text refers to the
propeller in figure A as being four bladed and also two bladed. It
is clearly two bladed and the reference to it being four-bladed has
been corrected.

End of the Project Gutenberg EBook of Scientific American Supplement, No.
647, May 26, 1888, by Various

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