ANNUAL ADDRESS OF THE PRESIDENT. LXXIX 
LIST OF THE PRINCIPAL AUTHORITIES CONSULTED IN 
THE PREPARATION OF THE FOREGOING ADDRESS. 
Norz.—The abbreviation “EH. P. P.”’ is used to designate English Par- 
liamentary Papers. Some of these papers are of folio size and others of oc- 
tavo size, but in the official sets they are all bound up indiscriminately in 
volumes of folio size, measuring 13 by 84 inches. 
Throughout the preceding pages authorities in this list are usually cited 
by number and page. For example, ‘‘27, p. 91’’ would indicate page 91 
of Capt. Kater’s account of his comparisons of various British standards of 
linear measure, contained in the Philosophical Transactions for 1821. 
1.—Picarp; M. L’Asst. De Mensuris. Divers ouvrages. Mem. de 
l’Acad. Roy. des Sciences, 1666-1699, Tome 6, pp. 532-549. Paris, 1780. 
2.—HirE; M. DELA. Comparaison du pied antique Romain a celui du 
Chatelet de Paris, avec quelques remarques sur d’autres mesures. Mem. de 
l’Acad. Roy. des Sciences, 1714, pp. 394-400. Paris, 1717. 
3.—MAvPERTUIS. La figure de la terre, déterminée par les observations 
de MM. de Maupertuis, Clairaut, Camus, le Monnier, * * * Outhier, 
* * * Celsius, * * * faites par ordre du Roy au cercle polaire. 
Paris, 1738. 16mo., pp. xxviii + 184. 
4.—CASsINI DE THuRY. Sur la propagation du son. (On p. 135 has 
statement respecting standards of length exchanged between the French 
Academy and the English Royal Society. ) Mem. de l’Acad. ey des Sci- 
ences, 1738, pp. 128-146. Paris, 1740. 
5.—Dégré du méridien entre Paris et Amiens, déterminé par la mesure 
de M. Picard et par les observations de MM. de Maupertuis, Clairaut, 
Camus, le Monnier, * * * Paris, 1740, 16mo, pp. lvj + 116. 
6.—GRAHAM; GrorGE. An account of the proportions of the English 
and French measures and weights, from the standards of the same, kept at 
the Royal Society. Phil. Trans., 1742, pp. [185-188]. 
7.—GRAHAM; GEORGE. An account of a comparison lately made by 
. some gentlemen of the Royal Society, of the standard of a yard, and the 
several weights lately made for their use; with the original standards of 
measures and weights in the Exchequer, and some others kept for public 
use, at Guild-hall, Founders-hall, the Tower, ete. Phil. Trans., 1743, pp. 
[541-556]. 
8.—CAssINI DE THuRyY. Ja meridienne de l’observatoire royal de Paris, 
vérifiée dans toute l’étendue du royaume par de nouvelles observations: 
Paris, 1744. 8vo, pp. 292 + ccxxxvj. 
