36 



The tvvo v.eek tables fcr "-^"^ exposed stai;ions show In 

 line 5 the remainder summation index for the respective cul- 

 ture periods. As has "been noted, this is obtained by subtra^'-ting 

 39° from each d.cdlj mean i>i:.t summing the remainders for the 

 period. Line 6 gives the average lanl^' relative physiological 

 index determined in ths manner previously described. Line 7 

 gives the average daily mean temperatures. Line S t'^.e average 

 daily rela-^ive evaporation index and line 9, the average daily 

 relative sunshine in'ensity. Line 10 shows the values cf the 

 average daily relative increment in stem height and line 11 the 

 values of the average daily relative increment in leaf-product. 

 The two-we<^k tables for the covered stations correspond to the 

 two-v7eek tables for the exposed stations except that no tempe- 

 rature cr sunshine data is available, and the tables thus con- 

 tain only the relative evaporation indices and the two nlant 

 measuren^ents. This is also true of the Baltimore Forest Station. 

 The four-week tables correspond line for line irith the two- 

 week ones except tiiat the four-week tabl.es show the aVerage 

 daily relative increment in leaf area insteac^ "•'*' '^' ^' average 

 daily relative incremant in leaf-product, ani a line is added 

 to the four-week tables giving the average daily relative 5n- 

 crem.ent in dry weight. 3ach four-v^eek value cf relative 

 daily physiological temperature index, relative daily evapora- 

 tion index, and relative daily sunshine intensity was obtained 



by averaging the relative values of these climat"'-^ -"-^/^tors for 



constituting the four-week period 

 the two-week periccb^in questi.:. . "^he four-week peii od value 



of the remainder summation index for any period was obtained by 



adding the values of th' s '■'^.lex for the tv/o - two-^""^"- •-•oricds 



making up the four-v/eek peri od uncler consideration. The average 



