METEOROLOGICAL CHAKT, 



SHOWING THE CONNECTION BETWEEN DIFFERENT METEOROLOGICAL PIIEN03IENA. 



COMPILED AND DRAWN FEOM OBSERVATIONS MADE DCEING THE YEAR 1838, 



By JAMES H. COFFIN, AT OODENSBURGH, NEW YORK. 



The Maps o/ a region, about 300 mileJi arouful Ogdettsburgh are surrounded hy ringft, in wUeh tlie Meteorological Faetit are repreitcnttd. 

 The width o/the shaded portion at eaehpoiilt of Compass w proportional, in Figure I, to the length of time that the Wind blew Jrom that 

 point during the year; in Figures 3 and i, to the average Rise or Fill 2>er hour in the Thtrrmomeler and Uirnmejcr, during surh iriiuts, the 

 FLUS{-\-)shmeingarise, and the 3UXUS (^—) a/alliuthe instruments: andin Figures 2, b and G, an the same prinripir, I 

 o/ aoudiness, and to the amrage quantity of Rain or Snote falling per hour. The numbers in the marg 

 three in No. 3; Jiee in No. i; and four in Nos. 5 and 6. 



T}ie CONTINUOUS lines diverging /rom Ogdenshurg shoK the monthly maximum points of Wind^ Temjicrature, Pressure and Cloudi- 

 tusB,- and Uie DOTTED lines the minimum points. TheJicavg lines shotc thttame/or the year. 



the degree 

 ■ tuo decimal places in No. 2; 



