( 194 ) 
El 
Correction for 
Value | | Remaining 
Mouth Tide- | Time of : 
A, / V6 | | Difference. 
range. | the year. | 
) | 
Maximum values of A. 
Apel 188s TE Ee | 4 
May 1886. | 2 | 7 ge | 7 3 
April 1888. 220 125 10 Qs 2 
April 1889. 229 9 | 10 ae] 145 
May 1889. | 225 OREN ot: Mirt ain AS. 5 
Minimum valne of A. 
October 1884. 148 —5 | —23 — 9 | —1]45 
December 1884. 158 ep eae in Rede 
February 1889. Dre — 20% = | A 
January 1890. | 160 —5 —155 —95 —3 
October 1890. | 149 1 —25 zige She) ee 
Months with ice. 
January 1885. 178 —l 12 —9° —16° 
February 1886. 188% 4 17° J —19 
March 1886. 186 0° 14 —2 —19 
February 1888. 164. —15 15° —7 —36 
March 1888. 183 —1 10 —2° —16° 
December 1890. | 167 | —7 JN en A ee 
Months with differences greater than 15 mm. 
February 1890. 189 | 0% 23° —7 | —21 
December 1888. ETE NEE - uate ed 24 
From this it appears that the corrections and the errors are 
positive in the months with maximum values of A, negative in those 
with minimum values. We find concerning February 1890 that there 
also has been ice during a portion of this month, that the mean 
height was lowest of all months and that as low water occurred on 
the 28th a few minutes before midnight, it had to be considered as 
oceurring in March. The great negative difference can probably be 
explained by these circumstances. 
