Nov. 1890.] BOTANICAL SOCIETY OF EDINBURGH. 



11 



Meteorological Observations taken at Eoyal Botanic Garden, Edinburgli, 

 during the Month of September 1890. 



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

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



Barometer. — Highest Reading, on the 7th, = 30-366. Lowest Reading, on the 

 22nd,=29-376. Difference, or Monthly Range, = 0-990. Mean=29-898. 



S. R. Thermometers.— Highest Reading, on the 9th,=74°-4. Lowest Reading, on 

 the lst=4r-3. Difference, or Monthly Range, =33°-l. Mean of all the Highest 

 = 65°-8. Mean of all the Lowest=50°-8. Difference, or Mean Daily Range, = 15°-0. 

 Mean Temperature of Month = 58'^-3. 



Hygrometer.— Mean of Dry Bulb = 58° -2. Mean of Wet Bulb = 55° -3. 

 Rainfall.— Number of Days on which Rain fell = 18. Amount of Fall, in inches, 

 =2-471. 



