Meteorological Obsei-vations for September 1827. 397 



retorts, and various other hollow and useful articles in wrought iron, 

 in steel, or composed of both those metals. — 11th of October. — 

 6 months. 



To Goldsworthy Gurney, of Argyle-street, Hanover-square, sur- 

 geon, for improvements in locomotive engines, and other apparatus 

 connected therewith. — 11th of October. — 6 months. 



To James Stokes, of Cornhill, London, for improvements in 

 making, boiling, burning, clarifying, or preparing raw or Muscovado 

 bastard sugar and molasses. — 11th of October.— 6 months. 



To John Wright, of Princes-street, Leicester-square, for im- 

 provements in window-sashes. — 11th of October. — 6 months. 



METEOROLOGICAL OBSERVATIONS FOR SEPTEMBER 1827- 



Gospo7i. — Numerical Results for the Month. 



Barom. Max. 30-34 Sept. 1. Wind NE.—Min. 29-50 Sept. 23. Wind SW. 

 Range of the mercury 0-84. 



Mean barometrical pressure for the month 29-986 



Spaces described by the rising and falling of the mercury . . . 3-700 

 Greatest variation in 24 hours 0-460. — Number of changes 30. 

 Therm. Max. 73° Sept. 18. Wind W.— Min. 49° Sept. 20. Wind NE. 

 Range 24°.— Mean tenip.of exter. air 60°-77. For 30 days with © in rTp60-53 

 Max. var. in 24 hours 24°-00 — Mean temp, of spring water at 8 A.M. 55°-25 



De Luc's Whalebone Hygrometer. 

 Greatest humidity of the air in the evening of the 27th . . . 100° 

 Greatest dryness of the air in the afternoon of the 2nd ; . . . 40 



Range of the index 60 



Mean at 2 P.M. 34°-6— Mean at 8 A.M. 64°-6— Mean at 8 P.M. 67-5 



of three observations each day at 8, 2, and 8 o'clock . . 62-2 



Evaporation for the month 2-85 inch. 



Rain near ground 3-835 hich.— Rain 23 feet high 3-545 inch. 



Prevailing Wind NE. 



Summary of the Weather. 

 A clear sky, 3^; fine, with various modifications of clouds, 14; an over- 

 cast sky without rain, 6 ; foggy 3 ; rain, 6. — Total 30 days. 



Clouds. 

 Cirrus. Cirrocumulus. Cirrostratus. Stratus. Cumulus. Cunnilostr. Nimbus, 

 18 10 28 3 24 26 18 



Scale of the prevailing Winds. 

 N. N.E. E. S.E. S. S.W. W. N.W. Days. 

 2 8 13 4 6 2 4 30 



General Observations. — The first part of this month to the 8th was fine, 

 calm and dry, with a constant North-east wind; and the latter part was 

 very generally wet, chiefly by night, with frequent fluctuations in the mer- 

 curial column of the barometer : but although the changes for this periocf 

 amount to 30, yet the aggregate of the spaces described by the motion of 

 the mercury is only 3-,?^ inches. 



The mean temperature of the external air this month is nearly a de- 

 gree higher than the mean of September for the last eleven years. 



At six minutes before 9 o'clock on the 1st instant, a large pear-shaped 

 light red meteor appeared from the N.W. It commenced its flight from 

 between the stars Alpha and Beta in the constellation IJerciilc.i, and burst 



