t 535 ] 
the above experiments, ibid. Experiment on a dog in water above the ftandard 
of its natural heat, p, 487. By which a remarkable change was produced in the 
appearance of the venous blood of the animal, p. 487. Experiment on another in 
hot air, ibid. Opinion of Mr. Wilfon, of Glafgow, concerning the effeCt produced 
by external heat upon the colour of the venous blood, p. 488. The true caufes of 
the cold produced by animals in a medium above their natural heat explained, ibid. 
Experiment on a dog immerfed in water much under its natural heat, p. 490. Why 
animals preferve an equal temperature, notwithftanding the great variations in the 
heat of the atmofphere, explained, p. 491. The effefts of the cold and warm baths 
accounted for, ibid. 
Cutler , Mr. See Willard. 
D. 
Death-watches. Suppofed to have wings in their perfeCMlate, p. 144, 
Delta. See Ganges. 
Dipping-needle . See Meteorological Journal. 
Dolfon, Dr. Matthew, his account of the Harmattan, a fingular African wind, p. 46. 
Defcription and fituation of the coafl: where that wind prevails, ibid. Blows from 
the N.E. p. 47. Always accompanied by a fog or haze, ibid. Which does not 
extend above four or five leagues over the fea, though the Harmattan is plainly felt 
ten or twelve, p. 48. Extreme drynefs, which greatly injures all the productions of 
the earth, is another confequence of this wind, ibid. Surprizing effects of that dry- 
nefs on books, furniture, floors, fhips, &c. ibid. And on the human body, ibid. 
Experiments made thereon with fait of tartar, p. 50. Table of thermometrical 
obfervations on, p. 51. Derivation of its name, p. 52. Its falubrious effects on the 
human fpecies, p. 53. Contributes much to the cure of ulcers and cutaneous 
eruptions, p. 34. Nature of the foil where it prevails, p. $$. Probable fource of 
that wind, ibid. See Nonius. 
E. 
Earthquakes. See Pennant, Lloyd. 
Englejield, Sir Henry C. Bart, his account of the appearance of the foil at opening % 
well at Hanby, in Lincolnfhire, p. 343'. 
Eprouvettes. See Tbompjon. 
Ether. Is the moll volatile fluid we are acquainted with, p. 511. See Cavallo . 
F. 
Fantoos , a nation on the Gold Coafl of Guinea. Their manner of dividing the year-, 
p. 56. 
Fixed Stars. See Pigott •» Irregularities occafioned by their aberration, p, 1 16. 
Voi, LXXK 4 A 
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