( 202 ) 
Dn Bar, @ Temp lpt gn eG 
1873 Jan. OEL oh TAD oe RLS Oos — 0.359 | + 1 
Febr. 0.208 | 63.6 2.3. | 0.392 | 405 — 45 
March | 0.29 | 575 | 48 | 0.304 331 | +. 29 
April 0 263 | 59.8 Zep 0.304 sa be 
May | 0.310 | 604 | 8.7 0.334 heee 
June | 0.337 | 60.9 12.7 0 303 828 Ihr 
Bd vo ss ELD 14.8 0.338 342 | 148 
Mel 0.429 | 60.7 14.6 0.359 | 346 | + 14 
Sept. | 0.406 60 5 (455 0.387 | 360 | 0 
Ont) 0849641", 5820 9.7 0.403 560 ed 
Nov. 05352))|-.59:2 5.9 0 412 381 | — A 
Dee. 0.193 69.2 90 0 409 „80 —— ae 
A874 Jan. 0.253 | 63.0 4.3 0 394 390 | — 30 
Febr. | 0.480 63.8 aime} | 0.344 357 + 3 
March | 0.168 | 658 5.5 0.327 304 | + 6 
April | 0.275 59.0 8.5 | 0.287 321 | + 39 
Before | undertook the further investigation of the reduced rates I *) 
I tried to find out the relation of the rates below O° to those 
above that temperature. It appeared that a systematic deviation of 
the former is far less evident than it was in the period 1877—98. In 
fact such a deviation shows itself clearly only in the two months 
1870 February and December. Finally I excluded the days with tem- 
peratures below O° only for these months and for 1864 December *). 
The modified reduced rates I, together with the corresponding tem- 
peratures, are as follows: 
Temp. zede 1 Besl 
1864 December + 2.4 == 02390 
1870 February + 1.9 REE 
December + 3.6 — (0 .386 
') In comparing my values of the reduced rates I for the two first years with 
those occurring in Katser’s papers, allowance must be made for the fact that my 
values apply for a pressure of 760 Mm. at 0°, whereas those of Kaiser may be 
assumed to apply for a barometer-height of 760 Mm. at +10’. 
2) During 8 other months the deviations were small and variable in sign. 
