| Description | A summary account of trials with rockets of different weights, commencing: 'a number of half pound rockets fired they seemed at a rude guess to mount from 600 to 1,000 feet in heighth...'
Two accounts of the observed height of rockets (by Benjamin Robins and by John Ellicott) were read to the Royal Society in the years 1749-1750 and published in the Philosophical Transactions. John Canton and others participated in the experiments. |