Meteorological Observations for 1793. 107 



order that the steam may penetrate the balls, and 

 thus destroy the worms ; or they may be placed in 

 vessels in ovens after the bread is taken out. The 

 former of these methods is, however, the best, as the 

 steam is not so liable to harden the gum, as the ap- 

 plication of heat in a dry form. Those balls, where 

 two worms have spun together, will not wind : these 

 should be cut open and boiled, with the refuse silk 

 above-mentioned, in soap and water, until they open, 

 and become as soft as cotton; it may then be spun 

 out of the hand upon a wheel, but can never be 

 carded. 



XXIX. Meteorological Observations made at Nazareth, 

 in Pennsylvania, for the year 1793. 



THE table on the opposite page is the result, 

 for the year 1793, of the meteorological observations 

 made at Nazareth, in Pennsylvania, by the Reverend 

 Charles Gotthold Reichel. 



They are taken daily, about sunrise, and between 

 two and three o'clock in the afternoon. 



The mean degrees on the thermometer, barometer, 

 and hygrometer, are determined, by adding together 

 the observations taken in each month, and dividing 

 the total by twice the number of days. The means 

 for the whole year are found, by dividing the amount 

 of the means for each month bv twelve. 



