IMPERIAL STANDARD TROY POUND WEIGHT. 
461 
free access to the Imperial Standard Troy Pound, and the permission to compare it 
with my copies ; but this application proved unnecessary, because, before it could be 
made, the President of the Royal Society, Davies Gilbert, Esq., had the kindness to 
intercede with the Speaker of the House of Commons in Captain Nehus’s behalf, and 
obtained permission to bring the Imperial Standard Troy Pound, upon his own 
responsibility, to the Apartments of the Royal Society in Somerset House, where it 
was deposited in the Council-Room : which place was assigned to Captain Nehus for 
his comparisons . Mr. Gilbert’s kindness extended still further. The balance in- 
tended for these comparisons, and ordered of Mr. Robinson, not being ready when 
Captain Nehus arrived, he permitted him to use Ramsden’s balance belonging to the 
Royal Society until Robinson’s could be obtained. Captain Nehus experienced like- 
wise during the course of his comparisons marks of uninterrupted kindness and at- 
tention from Mr. Hudson, then Assistant Secretary of the Royal Society. 
7. As soon as the Imperial Standard Troy Pound was brought to Somerset House, 
Captain Nehus’s first care was to make an accurate drawing of its shape and marks, 
measuring all its dimensions with the 
greatest care. The annexed drawing 
represents this pound in its actual di- 
mensions; and is now, since the origi- 
nal has been destroyed by the calami- 
tous fire that consumed the two Houses 
of Parliament in November 1834, the 
only thing remaining which can pre- 
serve an idea of it. 
I give now Captain Nehus’s com- 
parisons, first made with Ramsden’s 
balance, afterwards with Robinson’s. 
The Imperial Standard Troy Pound is 
designated by U (Unit), my Platina copy by S.p. The difference of weight is expressed 
in parts of the scale, the value of which will be shown in the sequel (see pages 465 
and 466.). The thermometers L and R were suspended in the box of the balance; 
L at left, R at right hand. 
