Most Viewed

- Never-yielding Cement
- The Deforming Mirrors
- Aigrettes
- A More Powerful Fulminating Powder
- A Liquid That Shines In The Dark
- A Lamp That Will Burn Twelve Months Without Replenishing
- Balloon Wheels They Are Made To Turn Horizontally: They Must Be
- To Make Artificial Coruscations
- Artificial Illuminations
- Another Way
- The Magnifying Reflector
- Another
- The Hour Of The Day Or Night Told By A Suspended Shilling
- Another Invisible Green Ink
- To Spin Sealing-wax Into Threads By Electricity
- Easy And Curious Methods Of Foretelling Rainy Or Fine Weather
- A Powder Which Catches Fire When Exposed To The Air

Least Viewed

- Stars With Points
- To Take Impressions Of Coins Medals &c
- To Tell A Person Any Number He May Privately Fix On
- To Tell The Amount Of The Numbers Of Any Two Cards Drawn From A
- To Tell The Amount Of The Numbers Of Any Three Cards That A Person
- The Card In The Opera Glass
- To Make Pictures Of Birds With Their Natural Feathers
- The Boundless Prospect
- Vegetable Air-bubbles
- The Electric Aurora Borealis
- To Tell The Number Of Points On Three Cards Placed Under Three
- How To Make The Pass Hold The Pack Of Cards In Your Right Hand So
- The Divining Card
- The Transposable Pieces
- To Diversify The Colours Of Flowers
- Wonderful Nature Of Lightning
- To Drive Or Ram Rockets Rockets Are Filled Hollow Otherwise They

Winter Changed To Spring

Take a print that represents winter, and colour those parts which
should appear green, with the second green invisible ink, described in
page 25; observing, of course, the usual rules of perspective, by
making the near parts deeper in colour than the others. The other
objects must be painted in their natural colours. Then put the print
into a frame with a glass, and cover the back with a paper that is
pasted only at its extremities.

When this print is exposed to a moderate fire, or the warm sun, the
foliage, which appeared covered with snow, will change to a pleasing
green; and if a yellow tint be thrown on the lighter parts before the
invisible ink is drawn over it, this green will be of different
shades. When it is exposed to the cold, it will again resume its first
appearance of winter.





Next: The Silver Tree
Previous: The Restored Flowers

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