238 Meteorological Observations for January 1829. 



popular and diverting Living Objects for the Microscope, with the 

 Phenomena presented by them under observation, &c., conjoined with 

 Accurate Descriptions of the latest improvements in the Diamond- 

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 Engravings, from Drawings of the Actual Living Subjects. By C. R. 

 Goring, M.D., and Andrew Pritchard. 



An Essay on the Lever ; containing a Mathematical investigation of 

 its properties, and numerous examples of its application in the con- 

 struction of Machines and Implements. By G. G. Ward, machine 

 maker ; to whom, as a working Member of the London Mechanics' 

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The Cause of Dry Rot Discovered ; with a description of a Patent 

 Invention for Preserving Decked Vessels from Dry Rot, and Goods 

 on Board from Damage by Heat. By John George, Esq., Barrister- 

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The Manual for Invalids. By a Physician. 



METEOROLOGICAL OBSERVATIONS FOR JANUARY 1829. 

 GospoH. — Numerical Results Jor the Month. 

 Barom. Max. 30-20 Jan.3L Wind NE.—Min. 29-00 Jan. 26. WindS'.W. 

 Range of the index 1-20. 



Mean barometrical pressure for the month 29-708 



Spaces described by the rising and falling of the mercury 6-080 



Greatest variation in 24 hours 0-560. — Number of changes 13. 

 Therm. Max. 49° Jan. 1 & 4. Wind N.W.— Min. 31° Jan.23. Wind NE. 

 Range 28°.— Mean temp.of exter. air 36-13°. For 29 days with in yy 39-98 

 Max. var. in 24 hours 19°-00 — Mean temp, of spring water at 8 A.M. .32°-12 



De Luc's Whalebone Hygrometer. 



Greatest humidity of the air in the evening of the 29th 88° 



Greatest dryness of the air in the afternoon of the 22nd 52 



Range of the index 36 



Mean at 2 P.M. 68°-2— Mean at 8 A.M. 75-9°— Mean at 8 P.M. 74-2 



of three observations each day at 8, 2, and 8 o'clock 72*7 



Evaporation for the month 0-60 inches. 

 Rain near ground 1-39 inches. 



Summary of the Weather. 

 A clear sky, 2^ ; fine, with various modifications of clouds, 11 ; an over- 

 cast sky without rain, 14; rain, 3^. — Total 31 days. 



Clouds. 



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



9 4 30 1 11 14 14 



Scale of the prevailing Winds. 



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

 7 12 5 2 ^ 4J 31 



General Observations. — This month has been generally dry, cold, cloudy, 



and windy ; and from the 14th to the 2.5th it was seasonable frosty weather, 



accompanied with light showers of snow on the 18th, 21st, 23rd, 24th, and 



' 25th. 



