f *°9 6 ] 
Tails of filh frozen, with a view to fee if they would be reftored to the adtions of life 
when thawed, p. 37, 38. 
Tanners, inftrudtions to them, for carrying on a new method of tanning, p. 120. See 
Leather . 
Tanning leather, an improved method of doing it, p. in. See Leather . 
Tartalea, his opinion concerning the communicating of motion to bodies, p. 343. 
Tench , experiment on one relative to its heat, p, 27. Experiment on a living and dead 
tench, to determine whether life had a power of refilling heat and cold, p. 28. 
Tail of a tench frozen with a view to fee if it would be reftored to the adtions of life 
when thawed, p. 37, 38. 
Ten- week Jlocks , flowers,- the effedl of their effluvia upon air, p. 202, 203. 
Theft , how punilhed among the Battas of Sumatra, p. 167. 
Thermometer , defcription of a fmall one on a new conflrudlion, p 7, 8. Abftradl of a 
regifter of the barometer, thermometer, and rain, at Lyndon in Rutland, for the year 
1 777, p. 554. See Lyndon . State of it within and without, at Fort St. George in 
the Eafl Indies, during the months of Odtober, November, December, 1776, p. 182 
— 188. And for the months of January and February 1777, p. 188 — 192. State of 
it within and without in London, for each month throughout the year 1777, p. 574 — * 
597. Greateft, leaft, and mean height of it in each month, p. 598. 
Thyme leaves, the effedt of their effluvia upon air, p. 202. 
Tigers , the Battas of Sumatra fuppofe them animated by the fouls of their anceflors, p. 
171. The tigers frequently deftroy thefe people, ibid. 
Toads , why they burrow and live under large llones in the winter, ,p. 32, 33.. 
Tongue, experiments on its heat, p. n, 1 2. 
Tower of Babel, a remarkable large ftone near Cape Town fo called, p. 103. De- 
fcription of it, p. 103— 105. 
Trackenfelts , one of the Seven-bergen, compofed of volcanic fubllances, p. 3., 
Trees. A defcriprion of the caffla tree, p. 169. Some account of the camphire tree, . 
ibid. The effect of the effluvia of tree-primrofe-flowers upon air, p. 20 2. Expe- 
riments on feme trees refpedting their temperature comparatively with that of the 
atmofphere in different feafons, p. 41 — 48. 
Tufa, ufed in the walls of ancient buildings in Cologne, p. 2. A hard volcanic ^tuffa 
ufed for building in the town of Bonn, p. 3. High rocks of it on each fide of the 
Rhine, p. 3. 4, Vaft quantities of it at Andernach, p. 5. It produces a confl- 
derable trade between that town and Holland, p. 6. The tuffas of Naples fuppofed 
to be compofed of a puzzolane, prepared by volcanic fire, ibid. 
Turks, an account of a moil dreadful putrid fever among them at B a flora , ,ca ufed by 
the Arabs, p. 2 1 5. 
