158 



IOWA ACADEMY OF SCIENCES. 



TABLE OF ALTITUDES. 



ALTITUDE. 



ATTTHORITT. 



Chatsworth , Big Sioux Valley 



Westfield , Big Sioux Valley , 



Struble, Floyd Valley 



Dalton , Floyd Valley 



Merrill, Floyd Valley 



Sioux City, (low water) Missouri River. 

 Sioux City, (rejiervoir) Missouri River.. 



Salix, Missouri River 



Sargent's Bluff, Missouri River 



Carroll, Tops of Hills 



Council Bluffs, Federal Building 



Hamburg, Missouri Valley 



Clarinda 



Cresco , Missouri Valley 



Missouri Valley, Missouri Valley 



Woodbine, Bnyer Valley 



1,152 

 1,131 

 1,271 

 1,212 

 1,167 

 1,076 

 1,342 

 1,092 

 1,103 

 1,400 

 989 



C. M. & St. P. Ry. 

 C. M. & St. P. Ry. 

 S. C. & N. Ry. 

 S. C. & N. Ry. 

 I. C. Ry. 

 Mo. River Comm. 

 City Engineer. 

 S. C. & P. Ry. 

 S. C. & P. Ry. 



Temperature —The region here con.siderecl naturally w^ould 

 not show very much variation in temperature except such 

 coming within the limits of difference due to latitude. 

 The northern portion, owing to its higher altitude and open 

 prairie, is somewhat cooler than the more thickly w^ooded 

 southwestern Iowa. It is a noticeable fact, however, that 

 the thermal belts extend along the Missouri and that they 

 can successfully grow certain varieties of apples and cher- 

 ries that will not succeed further eastward on the same 

 parallels of latitude. This is brought out quite strikingly 

 in a paper by Mr. Greene.*" 



The following temperature records show these differences 

 for Page county in southeastern Iowa, Sioux City in Wood- 

 bury county, and Council Bluffs in Pottawattamie county: 



CLARINDA. 



•Rep. Iowa Hort. Soc. 1900: 55. 



