with the Thermometer and Barometer at Batavia. 269 



Society of Sciences at Haarlem, vol. vi. part ii. p. 9, printed in 



1762. 



1758. 



Hence the mean temperature of the year is 78°5. 



In the above volume the observations are given at full length. 

 The thermometer was observed regularly at 6 in the morning, 

 at 12 and 2 p.m., and at 10 p.m. The thermometer was made 

 by Prins, successor of Fahrenheit, at Amsterdam, and it indi- 

 cated 32° in snow, and 214° in boiling water. No regular 

 hours, which is to be regretted, were kept in observing the ba- 

 rometer. The observations, however, were generally made in 

 the morning and evening. 



1759. 



The mean annual temperature, deduced from these obser- 

 vations for half a year, is obviously below 78°5. 



Prins was an excellent thermometer-maker. I possess some 

 of his manufacturing, which agree very well with those of 

 Dollend and Newman. The thermometer hung within the 

 house. 



Professor Reinwardt, who is preparing for the press his Tra- 



