Most Viewed

- Never-yielding Cement
- The Deforming Mirrors
- Aigrettes
- A More Powerful Fulminating Powder
- A Liquid That Shines In The Dark
- Balloon Wheels They Are Made To Turn Horizontally: They Must Be
- A Lamp That Will Burn Twelve Months Without Replenishing
- To Make Artificial Coruscations
- Another Way
- Artificial Illuminations
- The Magnifying Reflector
- The Hour Of The Day Or Night Told By A Suspended Shilling
- Another Invisible Green Ink
- Another
- 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
- Winter Changed To Spring
- To Take Impressions Of Coins Medals &c
- To Tell A Person Any Number He May Privately Fix On
- The Boundless Prospect
- Vegetable Air-bubbles
- The Electric Aurora Borealis
- To Tell The Number Of Points On Three Cards Placed Under Three
- 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 Divining Card
- The Card In The Opera Glass
- To Make Pictures Of Birds With Their Natural Feathers
- To Diversify The Colours Of Flowers
- Caduceous Rockets They Are Such As In Rising Form Two Spiral
- Swans And Ducks In Water
- The Mysterious Writing

Contrivance For A Watch Lamp Perfectly Safe Which Will Show The

Hour of the Night, without any trouble, to a person lying in Bed.

It consists of a stand, with three claws, the pillar of which is made
hollow, for the purpose of receiving a water candlestick of an inch
diameter. On the top of the pillar, by means of two hinges and a bolt,
is fixed on a small proportionate table, a box of six sides, lined
with brass, tin, or any shining metal, nine inches deep, and six
inches in diameter. In the centre of one of these sides is fixed a
lens, double convex, of at least three inches and a half diameter. The
centre of the side directly opposite to the lens is perforated so as
to receive the dial-plate of the watch, the body of which is confined
on the outside, by means of a hollow slide. When the box is lighted by
a common watch-light, the figures are magnified nearly to the size of
those of an ordinary clock.





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