METEOROLOGY. 153 



abject of storms and the temperature of different seasons 

 was discussed for some time by several of the members 

 of the Academy. 



The meeting then adjourned for two weeks. 



W. H. Atkinson, Got. Seohj. 



METEOROLOGY— GREAT STORMS. 



BY G. A. HYDE, 



Read before the Cleveland Academy of Natural Science, February 19, 1858. 



Under this head I propose to present a general view of 

 the great storms that pass over our country, and, in con- 

 nection therewith, show the use of the barometer and 

 thermometer, in indicating the approach of said storms, 

 and, to a certain degree, determine what will be their 

 character. 



From an examination of Prof. Espy's Report on Meteor- 

 ology, from a study of his Storm Charts, and from personal 

 observation, I present the following as characteristics of 

 these great storms. 



They generally commence in the "Far West," and travel 

 towards the East, and at a velocity of about thirty-six 

 miles per hour, or, they are usually about twenty-four 

 hours traveling from the Mississippi River to the Connec- 

 ticut River. 



They are accompanied with a depression of the barom- 

 eter near the central line of the storm, and are preceded 

 and followed by a rise of the barometer. Thus, at a sudden 

 fall of the barometer in the Western part of New England, 

 it will rise in the valley of the Mississippi and also at St. 

 Johns, Newfoundland. 



T 



