Experimental equipment to test electrical conductivity in a vacuum Finish:Rolled These experiments were conducted at

These experiments were conducted at Cragside in Northumberland

Mr William Forster (holding the bow)

no 401 Mile End Road

Zoological studies of three snakes from the south-western United States of America and Mexico

Plate 268 from chapter 58 of Gleanings of natural history

Experimental equipment to test electrical conductivity in a vacuum Finish:Rolled These experiments were conducted atPlate 9 figures 1 2 from the paper 'Electrical experiments made in order to ascertain the non conducting power of a perfect vacuum', by William Morgan, Philosophical Transactions of the Royal Society, vol. 75 (1785), pp. 272 278. Figure 1 shows a 15 inch mercury gauge partially coated with tin foil, emptied of air and inverted into a mercury cistern. A wire is visible within this reservoir, through which an electrical current was passed but without