INDEX, 
T. 
Tennant, Smithson, Esq. On two metals, found in the 
black powder remaining after the solution of platina, 
! Texture , on the transition from the vitreous to the stony. 
Thermometers , description of-some particular ones, 
Thermoscope , description of an instrument so called, 
Thomson Dr. Remarks on his opinion respecting some of 
Count Rumford’s experiments, 
u. 
Ursa £, on its motion, - - 
FI. 21, on its motion, . - - - 
£, on its motion, - - 
minoris on its motion, 
page 
411 
279 
78 
101 
28 
363 
371 
383 
382 
V. 
Varnish , method of making one with lac, - - 316 
Vegetables , on the change of some of their principles into 
bitumen, - - - * -385 
w. 
Water, experiments on, when exposed to' a high degree of heat, 
Watt, Gregory, Esq. Observations on basalt, and on the 
transition from the vitreous to the stony texture, which 
occurs in the gradual refrigeration of melted basalt ; with 
some geological remarks, - 
Withering , Djr. His analysis of the ragstone, 
Wollaston, William Hyde, M. D. On a new metal, 
found in crude platina, - 
Woodhouse, Robert, A. M. On the integration of certain 
differential expressions, with which problems in physical 
astronomy are connected, 8cc. - 
Y. 
Young, Thomas, M.D. The Baker iah Lecture. Experiments 
and calculations relative^^^s^^optics. 
152 
279 
281 
419 
219 
1 
From the Press of 
W. BULMER (3 Co. 
Cleveland-Row, St. James’i 
