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string & will reflect a nipple as large as a plate, and
women can see the secret places that they do not
want to show to surgeons. It casts the representation out of
itself, and if you touchle lieu the eye of
the representation with your finger, another finger
will come against yours.

You will make a light at night for someone quite far
away, if you place the concave mirror behind a candle
placed on the window. You can read and write quite
far from the candle if you place it behind the candle
& place & turn the concavity towards you. If you put
the mirrorat the end of a table & a
candle on it, it will represent two lights on the
table for you. To see what is happening on a street,
shutter the window, and the more you can shut there the
better. Make a hole at the lower pane, the size of your little
finger, perfectly round, from one side to the other. Then
place a sheet of paper on the window
& let the middle of the sheet be over the hole.
Pierce the sheet in the same place as the hole & the same
size. After, aim the concave face of the mirror towards the
hole, & it will represent for you anyone passing by in the
street on the sheet of paper. Similarly with
the pierced door of a closed room. You can make wavy ones
& triangular ones, of the sort described by Ptolemy &
Archimedes. The concave one also sets fire to straw,
lights a candle from afar, using the sun. By
reverberating fire too, it heats.


For bronzing in yellow and white

Take looking-glass tin and melt it. On half a lb of
this, put half an ounce of quicksilver, and remove it
all at once from the fire & grind it, and it will be like
ash. Grind Wash it quite well in clean water.
After, grind it on marble & soak it with water of
retcolle de retailles. After, apply to
your wooden candlesticks & any other work you like,
& burnish with the tooth. You can grind pin filings
and apply them with the said glue. 

