INDEX 
page 
Portsoy, operations for determining the variation in the 
length of the pendulum vibrating seconds at that sta- 
tion of the Trigonometrical Survey, - - 3.56 
its latitude, - 389 
Presents , a list of those made to the Royal Society, from 
November 1818, to July 1819, - - .50 9 
Proteosourus , an account of the fossil skeleton of that 
animal. - - 209 
reasons for giving this name to the fossil 
skeleton which has been described, - - 212 
Pus , on the conversion of it into granulations of new 
flesh, - - - 1 
changes which it undergoes upon the surface of a 
sore, - - 3 
its presence necessary to produce granulations or 
new flesh in sores, - - 7 
coagulated , rendered tubular by the extrication of 
its carbonic acid gas, 9 
R 
Refraction, corrections for it, - ldO* 
S 
Sabine, Capt. Edward, on irregularities observed in 
the direction of the compass needles of H. M. S. Isabella 
and Alexander, in their late voyage of discovery, and 
caused by the attraction of the iron contained in the 
ships, - - - - 112 
observations on the dip and 
variation of the magnetic needle, and on the inten- 
sity of the magnetic force ; made during the late voyage 
in search of a north-west passage, - - 132 
Sal-ammoniac, a saturated solution of it has a greater power 
of coagulating pus than any other substance, - 7 
its effects upon the surface of a sore, 8 
Saussure, Theodore di, (Professeur de l\iin6ralogie dans 
PAcad6mie de Genfcve, &c.) observations sur la de- 
composition de l’amidon a la temperature atmosphe- 
rique par Taction de Tair et de l’eau, - 29 
MDCCCXIX. 3 Y 
