( 85 ) 
Temp. 
A Temp. 
84 — 88 
| | 
84—88 
= 
1884 | 1885 | 1886 | 1887 | 1888 
| 
ST a en ee EN es Ie 
MEt Arrien a pot] oe09 (SEAB k1607| 44 |) AS) tgs f+ 8.9 P+ 30 
Juner Mareby 0444 | +22 | +38 | | +32 | WEE 6! 27 | +95 [4+ 8.5] 4 2.0 
July, February..... Mat | 8 be +30 | HU ;)/—5] +16 [+88] 413 
| 
lea? 
August, January ...| HM | + 8 8/+8);+A6] +1 [4+ 8.27 —138 
September, December) —26 | —22 | —40 | —14 | —296] —26 J+ 85] — 1.5 
October, November..| —60 | —70 | —77 | —24) —24] —5l J+ 7.4] — 3.5 
February, January | —18 Laon, 9 pe Oa NOM ay aimer Ove 
March, December. . | -41 | +97 | + 6 | +4 —2] +5 [+ 4.5] — 0.2 
April, November... | +2/+10|)--9|+2 | +20} +5 [+66] — 0.2 
May,» October. …:…. 406040 | —20 | H6 | 17 |+96] — 0.4 
Tone, September )..) ikl ial 43 | As af — 5 | 49.8] 4 0.6 
DU eA TE USE his 431 | +9j|+ 2; HI, —30 +7 |414.2] + 0.6 
must first be ascertained whether the adopted temperature-coefficient 
represents the observations for the whole period.*) 
For this purpose each year was treated separately. The years 
beginning with February were used, since in that case the temperature- 
coefficient is found nearly independent of the changes in the rate 
which are proportional to the time. 
Gradual variations with the time are namely clearly marked, 
and over long periods they are not even proportional to the time. 
This is seen from the following summary of the yearly means in 
which I have taken the years beginning with May in order to be 
able to include 1878. 
1878 + 0 ; 122 1885 + 0. 111 1888 + 0. 252 1895 + 0 9 AS 
1879 „120 1884 159 1889 „254 1894 „208 
1880) „189 1885 „189 1890 „247 1895 „220 
1881 „186 1886 „210 1891 ‚218 1896 „176 
1882 ee by) 1887 „251 1892 „222 1897 „169 
1) In the investigation of this section and also in that of 8.7, it was in- 
advertently omitted to apply corrections amounting to 0%.005 to six rates of the 
years "88 and °89. The influence of this omission is negligible. For the four 
months, in which the rates were rejected on account of the low temperatures, 
interpolated values were used. 
