174 



ENVIRONMENTAL CONDITIONS. 



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

 United States. (Plate 34.) — Continued. 



Station. 



Maryland : 



Annapolis (95) 



Bachmana Valley (94) 



Baltimore (95) 



Cambridge (95) 



Cheltenham (95) 



Chestertown (95) 



Chewsville (94) 



Coleman (95) 



College Park (94) 



Darlington (95) 



Easton (95) 



Emmitsburg (94) 



Fallston (95) 



Frederick (94) 



Great Falls (94) 



Green Spring Furnace (94) 



Pocomoke City (95) 



Princess Anne (95) 



Solomon's (95) 



Sudlersville (95) 



Taneytown (94) 



Washington, D. C. (94)... 



Westernport (94) 



Massachusetts: 



Amherst (105) 



Blue HUl (H) 



Boston (105) 



Fall River (H) 



Fitchburg (105) 



Hyannis (H) 



Lawrence (105) 



Middleboro (H) 



Monson (105) 



Nantucket (105) 



New Bedford (H) 



Pittsfield (H) 



Provincetown (H) , 



Springfield (105) 



Turners Falls (105) 



Williamstown (105) 



Michigan: 



Adrian (63) 



Alma (63) 



Alpena (63) 



Ann Arbor (63) 



Arbela (63) 



Ball Mountain (63) 



Big Rapids (62) 



Calumet (H) 



Charlevoix (62) 



Chatham (61) 



Cheboygan (63) 



Detroit (63) 



Escanaba (61) 



Grand Haven (62) 



Altitude. 



feet. 



45 

 860 



90 



25 

 230 



80 

 530 



80 

 170 

 300 



35 

 720 

 450 

 275 

 200 

 450 



37 



20 



20 



65 

 450 



75 

 1,000 



222 (H) 

 640 

 124 

 200 

 550 (H) 



31 



51 



53 

 390 



15 



100 



1,050 



15 

 199 

 200 

 711 



770 

 750 

 609 

 930 

 728 

 983 

 906 

 1,246 

 610 

 875 

 611 

 730 

 612 

 628 



No. of 

 years of 

 record. 



8 



9 



33 



9 



9 



13 



7 



7 



5 



12 



11 



7 



17 



6 



6 



11 



11 



13 



13 



8 



7 



38 



6 



20 



36 



26 

 25 



23 



17 

 14 

 23 



8 

 8 

 35 

 8 

 10 

 11 

 10 



8 

 8 

 11 

 35 

 11 

 18 



Average date of- 



Last frost 

 in spring. 



Apr. 15 



May 3 



Apr. 4 



Apr. 16 



Apr. 16 



Apr. 20 



May 7 



Apr. 15 



Apr. 30 



Apr. 22 



Apr. 10 



Apr. 6 



Apr. 20 



Apr. 24 



Apr. 30 



Apr. 21 



Apr. 22 



Apr. 23 



Apr. 8 



Apr. 12 



Apr. 28 



Apr. 7 



Apr. 30 



May 7 



May 10 



Apr. 20 



Apr. 25 



Apr. 28 



Apr. 27 



Apr. 27 



May 12 



May 10 



Apr. 10 



Apr. 23 



May 4 



Apr. 19 



May 1 



May 1 



May 10 



May 10 



May 14 



May 14 



May 6 



May 11 



May 10 



May 14 



May 11 



May 14 



June 1 1 



May 20 



Apr. 30 



May 16 



Apr. 28 



First frost 

 in autumn, 



Length of 

 average 

 frostless 

 season. 



days. 



196 



159 



213 



199 



187 



188 



153 



194 



162 



180 



206 



222 



176 



178 



170 



173 



180 



175 



219 



187 



163 



197 



162 



154 

 131 

 185 

 168 

 167 

 174 

 172 

 141 

 138 

 209 

 181 

 153 

 194 

 160 

 153 

 141 



173 

 139 

 137 

 159 

 135 

 147 

 132 

 150 

 151 

 98 

 127 

 164 

 140 

 167 



