Jan. 1892.] THE BOTANICAL SOCIETY OF EDINBURGH. 



245 



Meteorological Observation!? taken at Eoyal Botanic Garden, Edinburgh, 

 during the Month of December 1891. 



Distance from Sea, 1 inile. Height of Cistern of Barometer above Mean Sea-level, 

 71 '5 feet. Hour of Observation, 9 a.m. 



Barometer. — Highest Reading, on the 21st, = 30-494. Lowest Reading, on the 

 10th, =-28-563. Ditfereuce, or Monthly Range, = 1-931. Mean=29-649. 



S. R. Thermometers. — Highest Reading, on the 4th, =56°-0. Lowest Readings, on 

 the 17th and 2-2nd, =26'0. Ditierence, or Monthly Range, = 30°-0. Mean of all the 

 Highest =43°-8. Mean of all the Lowest = 3-3° '1. Diiference, or Mean Daily Range, 

 = 10°-7. Mean Temperature of Mouth = 38"-4. 



Hygrometer.— Mean of Dry Bulb=37°-9. Mean of Wet Bulb = 36°-8. 



Rainfall. — Number of Days on which Rain, or Snow, fell = 20. Amount of Fall, in 

 inches, = 4-751. First fall of Snow for Season on niglit of 10th. 



A. D. RICHARDSON, Observer. 



