186 



ENVIRONMENTAL CONDITIONS. 



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

 United States. (Plate 34.) — Continued. 



Station. 



Oklahoma — Continued: 



Oklahoma (41) 



Paul's Valley (41) 



Pawhuska (40) 



Perry (41) 



Ravia (40) 



Sac and Fox Agency (40) 



Shawnee (40) 



Stillwater (40) 



Temple (41) 



Wagoner (40) 



Waukomis (41) 



Weatherford (41) 



Webber's Falls (40) 



Oregon : 



Albany (H) 



Ashland (17) 



Astoria (17) 



Baker City (18) 



Bandon (H) 



Bend (17) 



Beulah (18) 



Blalock (18) 



Buckhorn Farm (17) 



Burns (18) 



Canyon City (18) 



Cascade Locks (17) 



Con<lon (18) 



Dayville (18) 



Detroit (17) 



Dornville (17) 



Drain (17) 



Fort Klamath (17) 



Gardiner (17) 



Glenora (17) 



Grant's Pass (17) 



Happy Valley (18) 



Heppner (18) 



Joseph (18) 



Klamath Falls (17) 



LaGrande (18) 



Lakeview (18) 



Lone Rock (H) 



McKenzie Bridge (17) 



Monroe (17) , 



Newport (17) , 



Paisley (18) , 



Pendleton (18) 



Pompeii (17) 



Portland (17) 



Port Orford (17) 



Prineville (18) 



Riverside (18) 



Roseburg (17) 



Salem (17) 



Silver Lake (17) 



Altitude. 



feet. 

 1,196 (H) 



No. of 

 years of 

 record. 



880 (H) 



224 

 1,940 

 11 

 3,471 

 55 

 4,000 

 3,269 



237 

 1,300 

 4,157 

 3,000 



100 

 2,891 

 2,500 

 1,500 



600 



300 



4,200 



72 



575 



956 

 4,200 

 1,950 

 4,400 

 4,250 

 2,784 

 4,825 

 3,114 

 1,400 



350 



69 



4,500 



1,272 



3,879 



57 



300 

 2,860 

 3,000 



610 



120 

 4,700 



18 

 8 



10 



10 

 6 



13 

 7 



15 

 6 



12 



12 

 8 

 8 



20 

 22 

 20 



16 



10 



11 



16 



5 



18 



5 



14 



5 



7 



6 



19 

 17 

 20 

 10 

 10 

 19 



19 

 25 



7 

 12 

 18 



5 

 18 

 14 

 37 



4 

 12 

 12 

 18 

 16 



Average date of- 



Last frost 

 in spring. 



First frost 

 in autumn. 



Apr. 

 Apr. 

 Apr. 

 Apr. 

 Apr. 

 Apr. 

 Apr. 

 Apr. 

 Apr. 

 Apr. 

 Apr. 

 Apr. 

 Apr. 



2 



11 



13 



9 



4 



4 



2 



10 



11 



10 



8 



13 



8 



Nov. 



Oct. 



Oct. 



Oct. 



Nov. 



Oct. 



2 

 20 

 26 

 30 



8 

 21 



Length of 

 average 

 frostless 

 season. 



Oct. 29 



Oct. 23 



Oct. 30 



Oct. 30 



1 

 9 



Mar. 27 

 Apr. 20 

 Mar. 6 

 May 24 

 Mar. 10 

 Possible 

 June 27 

 Mar. 23 

 May 1 

 June 25 

 May 19 

 Apr. 

 June 

 May 18 

 May 4 

 Apr. 13 

 Apr. 27 

 Possible 

 Mar. 27 

 May 10 

 May 6 

 Possible 

 May 6 

 June 15 

 Possible 

 May 20 

 Possible 

 June 23 

 June 1 

 Apr. 19 

 Mar. 19 

 May 25 

 May 8 

 All month 

 Mar. 16 

 Very infre 

 June 8 

 June 26 

 Apr. 15 

 Apr. 10 

 AH month 



Oct. 

 Oct. 



30 

 30 



Oct. 28 



Nov. 4 

 Oct. 14 

 Dec. 2 

 Sept. 28 

 Nov. 25 



throughout 

 Aug. 29 

 Nov. 2 

 Oct. 16 

 Aug. 26 

 Oct. 6 

 Nov. 13 

 Sept. 14 

 Sept. 20 

 Sept. 21 

 Nov. 4 

 Sept. 26 



throughout 



Dec. 8 



Oct. 11 



Oct. 12 



throughout 

 Sept. 29 

 Sept. 7 



throughout 

 J Sept. 22 I 



throughout 



days. 



214 



192 



196 



204 



218 



200 



210 



196 



202 



203 



205 



200 



203 



222 

 177 

 271 

 127 

 260 



year. 



63 



224 



168 



62 



140 



226 



97 



125 



140 



205 



152 



year. 

 256 

 154 

 159 



year. 

 146 

 84 



year. 

 125 



year. 

 85 

 103 

 196 

 278 

 122 

 150 



245 



74 



65 

 198 

 205 



