i<2,6 PHILOSOPHICAL TRANSACTIONS. [aNNO 1751. 



north-west 12 miles off, in the same manner. It must consequently be at a 

 great height, though it did not seem to be so, as the people in Borough-Fen, 

 which lies north-east of the place where he was when he saw it, saw the same 

 on the same hand as he did, and its form and course in the same manner. 



//. Of the same Meteor. Bi/ Mr. Henry Baker, F.R.S. p. 3. 



Mr. William Arderon, f.r.s. wrote, that the same meteor was seen at Nor- 

 wich by thousands of people, on Sunday the 22d of July, at 9 in the evening; 

 the appearance of which is exhibited in fig. 1, pi. 3. Its direction was, as near 

 as he could guess, from north to south, moving with great velocity. When due 

 east of him, its altitude was about 30 degrees; at which time the great distinct- 

 ness of its figure made him imagine it was not above 2 or 3 miles from him. 

 The splendour and beauty of its nucleus, particularly on the fore part, surpassed 

 all the fires he ever saw, being of a bright silver colour; its tail was of the co- 

 lour of a burning coal, though something fainter. Its head, or nucleus, ap- 

 peared to him under an angle of somewhat more than 2", and its tail of about 

 21°. He lost sight of it in a cloud, not above 20° above the southern part of 

 the horizon, into the middle of which it entered; but a friend of his, being 

 about 4 miles more southward, saw it again, after it came out of this cloud, till 

 it entered into another. 



///. Thermometrical Tables and Observations. By John Stedman, M.D. p. 4. 



This journal of the heat was kept during the encampment in Dutch Brabant, 

 in the last year of the war, viz. 1748, and is chiefly remarkable in showing the 

 difference between the heat in the tents and in the open air. 



Dr. S. observed, 1. That in tents the heat frequently varies 20, 25, and 

 sometimes 30°, in 24 hours; reckoning by Fahrenheit's scale. 



2. That the uneasiness, felt on great changes of heat and cold, depends more 

 on the sudden change from the one to the other, than on the excess of either; 

 having often seen, in a long course of sultry weather, men sitting unconcern- 

 edly in their tents, when the air they breathed in was raised to about 90°; and 

 the same men in winter standing in the open air with no warmer clothes, and 

 yet without any complaint, though the cold was some degrees below the freezing 

 point. Whence it appears, that, if such a change of air be gradual, the same 

 person can, without any uneasy sensation, bear the difference of 60, 62, or d4° 

 of heat. 



3. That we are able to endure a greater degree of heat, than what has been 

 hitherto thought enough to kill animals, as will appear from the following ex- 

 ample. A soldier being confined to a tent called the standard-guard, while the 

 weather was so extremely hot, that the thermometer rose within the tent 103 or 



