THE XOETHEEX HARDWOOD FOEEST. 



Table 1. — Temperature and precipitation l - within the northern hardwoods and the north- 

 ern edge of the southern hardwood regions. Based on data from United States Weather 

 Bureau Bulletin Q (1906); observations extending over period of from 5 to 50 years. 







Average monthly temperature. 



Average 

 tempera- 



Geographical division and forest 

 region. 



Apr. 





Growing season. 







ture for 

 the 





May. 



June. 



July. 



Aug. 



Sept. 



uct. ; growing 

 season. 



New England and the Adirondacks 

 Northern hardwood 



: "F. | ■ 

 41 i 



F. 

 54 

 56 



59 

 62 



53 



58 



54 

 59 



F. 

 62 

 65 



66 

 68 



63 

 67 



63 

 67 



F. 

 66 

 70 



69 

 72 



68 

 72 



67 



o 



F. 

 64 



67 



67 

 71 



64 



70 



65 

 69 



° F. 

 57 

 60 



62 

 64 



57 

 62 



58 

 62 



46 



° F. 

 61 



Southern hardwood 



Alleghenies and Southern Appala- 

 chians: 

 Northern hardwood 



44 



46 

 50 



41 



47 



J _ 42 



47 





4S 



50 

 54 



45 

 50 



46 

 51 



64 

 65 



Southern hardwood 



67 



Lake States: 



Northern hardwood 



Southern hardwood 



61 

 66 



General average: 



Northern hardwood 



61 



Southern hardwood - 



71 





66 



Geographical division and forest 

 region. 



Average precipitation. 



Average total 

 ; precipitation. 



Aver- 

 age an- 



Apr. 





Growing season. 



Grow- 



An- 

 nual. 



nual 

 snow- 





May. 



June. 



July. 



Aug. ' Sept. 





season. 



fall. 



New England and the Adiron- 

 dacks: 

 Northern hardwood 



In. \ In. 

 2.4 3.3 

 2.9 3.5 



3.4 4.1 



In, 

 3.9 

 3.8 



5.6 

 4.6 



3.8 

 3.8 



4.2 



4.1 



In. 



4.4 

 4.1 



4.9 

 4.7 



3.8 

 3.5 



4.2 

 4.2 



In, 

 4.1 

 3.8 



4.7 

 3.5 



3.6 

 3.0 



4.0 

 3.4 



In, 

 3.7 

 3.5 



3.6 

 3.1 



3.4 



3.0 



3.5 

 3.2 



In. 

 3.3 

 3.6 



3.8 

 2.5 



3.1 



2.4 



3.3 

 2.8 



Inches. 

 19.4 

 18.7 



22.9 

 19.8 



18.1 

 16.6 



19.0 

 18.5 



Inches. 

 42.8 

 44.8 



49.2 

 41.8 



31.1 

 29.9 



38.4 

 39.2 



Inches. ' 

 96.1 



Southern hardwood 



78.1 



Alleghenies and Southern Appa- 

 lachians: 

 Northern hardwood 



58.5 



Southern hardwood 



3.1 

 2.3 



3.9 

 3.5 



32.4 



Lake States: 



Northern hardwood 



64.0 



Southern hardwood 



2.4 3.3 



2.5 3.6 

 2.9 3.6 



40.1 



General average: 





Southern hardwood 



48.4 





























1 Monthly averages for the growing season— May to September, inclusive— and for April and October, 

 with average annual precipitation and snowfall. 



The stations and altitudes at which, the observations were taken 

 are as follows : 



Northern hardwoods : 

 New England — 



Mayneld, Me 



Bethlehem, N. H 



Stratford, N. H 



Wells, Vt 



Jacksonville, Yt 



Saranac Lake, N. Y 



Number Four, N. Y 



Alleghenies and Southern Ap- 

 palachians — 



LeRoy, Pa 



State College, Pa 



Terra Alta, W. Ya 



Linville, N. C 



Lake States — 



Calumet, Mich 



Escanaba, Mich 



Grayling. Mich 



Ivan, Mich. 





Feet. 



1 



000 



1,470 





950 



1 



000 



1 



000 



1 



620 



1 



571 



1 



400 



1 



191 



3 



207 



3 



800 



1, 



246 





594 



1 



147 



Northern hardwoods — Continued. 



Lake States — Continued. Feet. 



Koepenick, Wis 1, 675 



Medford, Wis 1, 420 



Grantsburg, Wis 1, 095 



Mount Iron, Minn 1, 510 



. Sandy Lake Dam, Minn . . 1, 229 



Park Rapids, Minn 1, 300 



Southern hardwoods: 



Lewiston, Me 210 



Concord, N. H 280 



Rome, N. Y 450 



Pittsburgh, Pa 757 



Elkins, W. Ya 1, 920 



Hot Springs, Ya 2, 195 



Aaheville, N. C 2, 255 



Lansing, Mich 881 



Madison, Wis 974 



St. Paul, Minn 758 



