Description | Last Friday the diving engine was tried at Deptford by the Amanuensis, who stayed in it 28 minutes under water
A circle was made with 'powder of Unicornes horne', and a spider set in the middle of it: but immediately it ran out , several times - repeated the spider once made some stay upon the powder.
Order'd that Dr Goddard do provide for the experiment of compression of air in the immersion in water.
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