99 



in tables 6 and 7, which he has kindly sent to the Institute 

 The publication of our tables has induced Prof. Gill of Flush- 

 ing, L. I., Prof. Smith of the Wesleyan University, at Middle- 

 town, Conn., Prof. Locke of Cincinnati, Ohio, and Prof. Joe- 

 lin of Schenectady, to unite in making contemporaneous ob- 

 servations, of which those by the three first named gentlemen 

 are contained in tables 8, 9, and 10. Professor Gill's observa- 

 tions have also been published in the Mathematical Miscel- 

 lany, Prof. Smith's in the Middletown Sentinel, and Prof. 

 Locke's in the Western Monthly Magazine. Professor JosUn's 

 observations have not as yet been published. 



The committee have appended to these tables a diagram, 

 representing the variations of the barometer on the 21st and 

 22dof March, at Flushing, Middletown, Albany, MonUreal and 

 Cincinnati, in which the variation of each observation from the 

 mean of the 37, is measured on the line corresponding to the 

 hour, and these points united by straight lines. 



MATTHEW HENRY WEBSTER, 



PHILIP TEN EYCK, 



JOHN V. L. PRUYN, 



HORACE B. WEBSTER, 



Committee. 



The committee earnestly request all who may hereafter 

 take similar observations, to communicate them to the Insti- 

 tute, as it is intended to publish a Number of the Transac- 

 tions every three months, containing all the observations made 

 on this Continent, which may be received. 



