Results of Meteorological 

 Observations 



MADE AT URBANA, OHIO, FOR 25 YEARS; LATITUDE, 40° 6^ NORTH; 



LONGITUDE, 83° 43^ WEST; AND 1044 FEET 



ABOVE TIDE WATER." 



BY MILD G. WILLIAMS. 



EXPLANATIONS. 



The observations and records were made in accordance with the 

 forms adopted by the Smithsonian Institution ; the regular hours of 

 observation being 7 o'clock A. M., 2 P. M., and 9 P. M. 



Thermometer. — Besides the regular observations the temperature 

 at sunrise was noticed; this was recorded as the minimum for that 

 day. The annual minimum is the lowest observed point for the year, 

 and the maximum the highest point for that year, without regard to 

 the regular times of observation. The monthly and annual means are 

 obtained from the three regular daily observations. 



Barometer. — The height of the mercury is given after the proper 

 reductions are made; and the means are procured from the three reg- 

 ular observations. 



Clouds and wind. — The degree of cloudiness is indicated by num- 

 bers, the scale being 10 to 0; 10 indicating entire cloudiness, 5 one- 

 half, and entire clearness, &c. The course of the clouds is given to 

 eight points of the compass, and the prevailing course for each day is 

 recorded. The record of the force and course of the wind is entered 

 in the same manner. 



