180 TRANSACTIONS OF THE ILLINOIS 



The next chart, which is for 7 a. m., of the 7th, represents, 

 as you will see, the center of the low barometer as near Indian- 

 ola, Texas, and the zero line at Sante Fe and Fort Elliott, but 

 almost unchanged as to the Lake Region. The temperature of 

 the Gulf Coast is forty degrees and upwards. 



This chart, which is for 3 p.m., shows the low center to be in 

 the Gulf of Mexico, immediately south of Indianola, and off the 

 north of the Rio Grande. The zero line has also dropped down, 

 and that too against the modifying influence of the afternoon 

 sun, from Fort Elliott to Fort Sill, while the temperature of the 

 Coast responding to the combined influence of the sun and the 

 presence of the low barometer, which you have already learned 

 m variably brings higher temperature; has risen to sixty and 

 seventy degrees. The orange orchardists of Florida were yet un- 

 conscious, unless warned through the Signal Service, of their im- 

 pending doom. 



At 11 p. m. we find the low area covering the mouth of the 

 Mississippi. The zero line has spread eastward to Fort Smith, 

 Arkansas, from which point it extends almost due northward to 

 St. Paul and the St. Louis rivers, where it turns eastward 

 through Lake Superior into Ontario. The temperature has 

 fallen in Texas to thirty degrees at Indianola and Galveston, but 

 is still sixty degrees in Florida. 



The chart for the morning of the 8th represents the low cen- 

 tral at Montgomery, Alabama, and the zero line extending from 

 the Rio Grande below El Paso, Texas, by way of Palestine, Little 

 Rock, Keokuk and Lake Superior. Temperature of Floriafrom 

 fifty to seventy degrees, while all of Texas is below twenty de- 

 grees. Texans will remember this as their coldest morning. 



Eight hours later, (the heat of the day), the low is in eastern 

 Georgia, while zero has extended eastward to the Mississippi 

 river, but is receding in western Texas. The orange orchards 

 are still unharmed in Florida, but are suffering in Louisiana. 



At 11 p. m. the low has reached the mouth of Chesapeake Bay, 

 and the zero line now takes in Memphis and northern Missis- 

 sippi. The Gulf Coast from Pensacola westward has a temper- 

 ature of twenty degrees and lower, but in east and south Florida 

 it is still above fifty degrees. 



The morning chart, 7 a. m., of the 9th, shows the low center 

 on the New Jersey coast, and zero extending from Santa Fe via 

 Denison, Vicksburg, Chattanooga, and thence northward to Cin- 

 cinnati, Chicago and Lake Superior. Jacksonville and Cedar 

 Keys have a temperature of thirty degrees, while Sanford and 

 Punta Rassa have forty and fifty degrees respectively. At this 

 observation we note the greatest barometrical gradient that oc- 

 curred during the storm, the readings being 28.8 inches at the 

 center of the low, in New Jersey, while on the northern border 



