91 
Summary. Wood-growth in percentages above the average. 
WINTER. | 
SUMMER. 
Cold. Mild. | Cool. Hot. 
Ms à 0 ONE nt DANONE SD) ESS AS) 
Trier, Kaiserslautern, Saarbrücken — 2.5 (33)| — 3.4 (23) | — 3.4 (31) | — 2.6 (35) 
Coblentz, Taunus, Vogelsberg . — 5.6 (51) | ral) 4 4 (GI) EE A 255) 
Porsch(Odenwald + 2.5 (37) | — 2.4 (23) | + 3.5 (31) | — 4.5 (35) 
Meckenheim (near Bonn) . . . — 8.8 (7) — 2.5 (9) — 4,4 (13) | — 0.9 (16) 
RMS End On SE NT. 1023))—182 GL) +124 (65) 
En @Idenb ol. 0 (OU, | 2123 (6) VE (O8 47) | 48 (8) | — 5.719) 
Ems 1, Oldenb. I. . . . . . | — 3.6 (6) | +142 (7) | — 4.1 (8) + 7,3 (9) 
Ernst Olidenbtl en 159. Il 6:31(6) + 5.4 (7) | — 0.1 (8) | — 2.0 (9: 
CIdénbur al. 1... + 4e | à — 6.6 (6) — 1.2 (7) nn ON) ES N9) 
ESRI à | — 11.3 (6) | — 8.8 (7) | + 13.6 (8) | — 16.2 (9) 
De Punt (near Groningen). . . | —11.9 (6) | — 8.9 (10) | + 3.9 (11). — 7.5 (15) 
Weighted mean . . | — 4.2 108 0) EME 
II. More accurately. They have been multiplied 
in the period 1806—1830 by 0.543 
LL 122 F2 18491878 by 0.442 
weighted mean 0.481. 
Fig. IX therefore shows for instance that in the year 
1870 the tree growth was 25 percent (of the average 
tree-growth) below the average, whereas the rain was 
0.5/4, that is 43 °/, (of the average rainfall) below the 
average. Of course the factors 0.543 and 0.481 were 
determined in such a way that the fluctuations in rain 
and wood growth in the figure become most nearly equal. 
Adding the probable errors, what I found was: 
À. On an average, if rain-height in spring and summer 
is 100 percent above the average, the growth is 48 percent 
T 5 above the average. 
