176 



ENVIRONMENTAL CONDITIONS. 



Table 2. — Frost data and length of average frostless season for 1803 stations in the 

 United States. (Plate 34.) — Continued. 



Station. 



Minnesota — Continued: 



St. Paul (56) 



St. Peter (56) 



St. Vincent Pembine (57). 



Sandy Lake Dam (57) 



Shakopee (56) 



Tower (57) 



Wabasha (58) 



Winnebago (56) 



Worthington (55) 



Mississippi : 



Austin (79) 



Batesville (H) 



Biloxi (80) 



Booneville (79) 



Brookhaven (80) 



Canton (80) 



Columbus (79) 



Crystal Springs (80) 



Greenville (79) 



Greenwood (79) 



Hattiesburg (80) 



Holly Springs (79) 



Leakesville (80) 



Louisville (79) 



Magnolia (80) 



Meridian (80) 



Natchez (80) 



Palo Alto (H) 



Pearlington (80) 



Pontotoc (79) 



Vicksburg (80) 



Water Valley (79) 



Waynesboro (80) 



Woodville (80) 



Yazoo City (80) 



Missouri : 



Appleton (49) 



Avalon (51) 



Belle (50) 



Bethany (51) 



Birchtree (50) 



Brunswick (51) 



Caruthersville (50) 



Columbia (51) 



Darksville (51) 



Dean (49) 



DeSoto (50) 



Fairport (51) 



Fayette (51) 



Fulton (51) 



Gallatin (51) 



Gano (50) 



Gorin (51) 



Grant City (51) 



Greenville (50) 



Altitude. 



feet. 

 848 

 840 

 789 



1,234 

 750 



1,350 

 681 



1,100 

 979 



200 

 230 

 24 

 504 

 500 

 228 

 250 

 468 

 126 

 140 

 154 

 600 



561 

 415 

 375 

 206 

 300 

 10 

 475 

 247 

 300 

 191 

 560 

 116 



1,000 

 881 



1,200 

 652 

 860 

 784 

 826 



498 

 535 



725 

 818 

 803 



700 

 1,130 



No. of 

 years of 

 record. 



36 

 14 

 14 

 17 

 14 

 7 

 14 

 11 

 15 



15 



18 

 15 

 16 

 16 

 14 

 16 

 18 

 14 

 16 

 14 

 16 

 16 

 15 

 20 

 16 



16 

 18 

 38 

 17 

 17 

 16 

 16 



18 

 12 



8 

 16 

 16 

 20 

 13 

 20 

 17 

 10 



7 

 12 

 24 

 14 

 17 



6 

 15 

 12 

 12 



Average date of- 



Last frost 

 in sprin"?. 



Apr. 27 



May 17 



June 3 



May 21 



May 12 



June 5 



May 1 



May 6 



May 7 



Mar. 30 



Mar. 24 



Feb. 25 



Mar. 29 



Mar. 18 



Mar. 19 



Mar. 27 



Mar. 24 



Mar. 18 



Mar. 19 



Mar. 11 



Mar. 28 



Mar. 5 



Mar. 26 



Mar. 15 



Mar. 17 



Mar. 9 



Mar. 27 



Mar. 1 



Mar. 28 



Mar. 6 



Mar. 27 



Mar. 20 



Mar. 12 



Mar. 28 



Apr. 20 



Apr. 22 



Apr. 17 



Apr. 26 



Apr. 17 



Apr. 17 



Apr. 5 



Apr. 18 

 23 

 16 



Apr. 



Apr. 



Apr. 21 



May 



Apr. 



Apr. 



Apr. 



Apr. 



Apr. 



Apr. 



Apr. 



1 

 21 

 21 

 17 

 23 

 29 

 26 

 16 



First frost 

 in autumn. 



Oct. 3 



Sept. 27 



Sept. 14 



Sept. 23 



Sept. 25 



Sept. 13 



Oct. 5 



Sept. 28 



Sept. 23 



Oct. 

 Oct. 



Nov. 

 Nov. 



Oct. 

 Oct. 



Oct. 

 Oct. 

 Oct. 

 Oct. 



Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 

 Oct. 



29 

 24 



Nov. 28 

 1 

 4 

 4 

 31 

 31 

 31 

 27 

 9 

 2 



Nov. 



Nov. 



Nov. 



Oct. 



Oct. 



Oct. 



Oct. 



Nov. 



Nov. 



Nov. 10 



Oct. 30 



Nov. 12 



Nov. 4 



Nov. 24 



Oct. 28 



Nov. 13 



Oct. 31 



Nov. 4 



Nov. 14 



Nov. 2 



19 

 12 



Oct. 15 



Oct. 8 



Oct. 16 



Oct. 19 



21 

 14 

 14 

 13 



Oct. 12 

 Oct. 8 



14 

 8 



19 



15 

 9 



13 

 9 



Length of 

 average 

 frostlesa 

 season. 



days. 



159 



133 



103 



125 



136 



100 



157 



145 



139 



213 

 214 

 276 

 217 

 231 

 230 

 218 

 221 

 227 

 222 

 243 

 219 

 250 

 218 

 239 

 230 

 248 

 222 

 268 

 214 

 252 

 218 

 229 

 247 

 219 



182 

 173 

 181 

 165 

 182 

 185 

 199 

 179 

 174 

 180 

 174 

 160 

 176 

 170 

 185 

 175 

 164 

 170 

 176 



