( 90 ) 
Obs.—Comp I and Obs.—Comp. II, where Computation I means 
the representation by the formula, while Comp. II refers to the curve. 
For the second period the differences Obs.—Comp. are also given. 
Everything is expressed in thousandths of a second. 
79 — 86 | 9796 | 79 — 86 | 37-96 
—_—— - 
0.-C.1)0.-C11} 97% 0; = 6.41 10.0.) 27 ae 
Mary Saken | ep | ae a) eal | November |) 4149) Se eo eas 
Jone heer EAD Zn D iden December. + 3) — 5| + 6 
a teen act ae UPS are tg January: i= eS Aa 
August.....; + 11 | +9, — 6 February ..| — 14} —M | — 3 
September... | + 2| + 3) — 2 Marel, ...-: + 4 | + 4; — 15 
| } 
October. t i) Oy ON ares ON) Aprile Sven de 6 | a | SE 
Finally attention must be drawn to the fact that a term with the 
argument 427° might be explained by the direct influence of the 
temperature, if a quadratic term is assumed therein. In fact the 
yearly variation of temperature can be approximately represented by : 
T—May 1 
Ein — + 5.°S sin An — 365 
565 
whieh would introduce into the rate a term: 
T—May1 
365 
Ar = — 15e, cos 4a 
which agrees nearly with the second term in the above formula 
for the period 1879—1886, if we take c, = + 6. The probability of 
this explanation is however lessened by the fact that a similar term 
does not exist after 1886. 
8 
used to free the monthly means from all periodic terms and then 
> 
The results which have so far been derived have finally been 
to represent them by a simple curve. 
For this purpose 
Ist the reduced rates I were reduced to the mean temperature 
+827 
2nd the corrections, which become necessary if the temperature- 
coefficients given at the end of § 6 are adopted, were applied. 
