360 Third Report on Weights and Measures. 



We beg leave therefore finally to recommend, with all humility, 

 to Your Majesty, the adoption of the regulations and modifica- 

 tions suggested in our former reports, which are principally these: 



1. Tliat the Parliamentary standard yard, made by Bird in 

 1760, be henceforward considered as the authentic legal standard 

 oi the British empire ; and that it be identified by declaring that 

 39,1393 inches of this standard, at the temperature of 62" of 

 Fahrenheit, have been found equal to the length of a pendulum 

 supposed to vibrate seconds in London, on the level of the sea, 

 and in a vacuum. 



2. That the Parliamentary standard Troy pound, according 

 to the two-pound weight made in 1758, remain unaltered; and 

 that 7000 Troy grains be declared to constitute an Avoirdupois 

 pound ; the cubic inch of distilled water being found to weigh at 

 62 deg. in a vacuum, 252-72 parliamentary grains. 



3. That the ale and corn gallon be restored to their original 

 quality, by taking, for the statutable common gallon of the Bri- 

 tish Empire, a mean value, such that a gallon of common water 

 may weigh 10 pounds avoirdupois in ordinary circumstances, its 

 content being nearlv 277'3 cubic inches; and that correct stand- 

 ards of this imperial gallon, and of the bushel, peck, quart, and 

 pint, derived from it, and of their parts, be procured without de- 

 lav for the Exchequer, and for such other offices in Your Majesty's 

 dominions as may be judged most convenient for the ready use 

 of Your Majesty's subjects. 



4. Whether any further legislative enactments are required, for 

 enforcing a uniformity of practice throughout the British empire, 

 we do not feel ourselves competent to determine : but it appears 

 to us, that nothing would be more conducive to the attainment 

 of this end, than to increase, as far as possible, the facility of a 

 ready recurrence to the legal standards, which we apprehend to 

 be in a great measure attainable by the means that we have re- 

 commended. It would also, in all probability, be of advantage to 

 give a greater degree of publicity to the appendix of our last re- 

 port, containing a comparison of the customary measures em- 

 ployed throughout the country. 



5. We are i.ot aware that any further services remain for us to 

 perform, in the execution of the commands laid upon us by Your 

 Majesty's commission : but if any superintendence of the regula- 

 tions to be adopted were thought necessary, we should still be 

 ready to undertake such inspections and examinations as might be 

 required for the complete attainment of the objects in question. 



(Signed) Georgb Clerk. Thomas Young. 



Davies Gilbert. Henry Kater. 



Wm. H. Wollaston. 

 London, March 31, 1821. 



LXII. Anew 



