INDEX. 
S page 
Sap in Trees , on its descent, - - - 277 
Serpentis on its motion, - 380 
Silver, its effects on gold, - - - 91,93 
account of some experiments upon it, - - 184 
Smithson, James, Esq. A chemical analysis of some calamines, 12 
Stars , on the changes in the relative situation of double ones, 339 
— — remarks on their apparent diameters, - - 345 
observations at D unnose, to determine the zenith distance of 
several, - - - - 445 
— — observations at Clifton, to determine the zenith distance of 
several, ------ 452 
— observations at Arbury Hill, to determine the zenith distance 
of several, - - - - 459 
observations at the Royal Observatory, to determine the 
zenith-distance of several, - 464 
Stones , account of some, said to have fallen on the earth, - 200 
Sumach , on the infusions of it, - - 267 
Survey , trigonometrical , account of the measurement of an arc of 
the meridian, in course of it, - - 383 
. — description of a zenith sector used in it, 386 
particulars relating to the operations of the 
year 1802, - - - 410 
— particulars relating to the measurement of 
a new base line, on Misterton Carr, - - 418 
Angles of the great triangles observed in 
the years i8co and 1801, - - - 420 
■ .■ reduction of the base to the temperature of 
62°, - - - - - 424 
recent comparison of the standard and 
working chains, - - - - 426 
calculation of a series of triangles, extending 
from Dunnose to Clifton, - - - 427 
calculation of the meridional distance be- 
tween Dunnose and Clifton, - - 434 
bearings of certain sides from the parallels 
to the meridian of Dunnose, - 435 
— ~ — observed angles between the pole star and 
the staff at Gringley on the Hill, - - 436 
distance between the parallels of latitude 
of Greenwich and Dunnose, - - - 439 
