HYDROGR. SECTION — APPENDIX B (42) 
Newbiggin—Söndervig 
M, = 2066,0 
PE ee 
8,3 
It was only possible to determine the mean temperatures directly on two 
occasions; but these temperatures are very reliable, so that the calculated tempe- 
ratures give quite a good notion of the conditions, though greater certainty is 
desirable. The mean error of the average of the two resistance measurements is 
3:0; if therefore sufficient temperature observations were forthcoming for a more 
certain determination of M,, the temperatures might be calculated with an 
exactness of 0°4. 
Oye—Fanoe 
Pee 1395,5 
7 5,3 
If we suppose that the mean error of the resistance in per cent is the 
same as for the last mentioned cable, the error here would be 2:6. If the tempe- 
ratures determined directly were reliable, and M, thus well determined, the tem- 
peratures might be calculated with a mean error of 0°5. The mean deviation 
between observed and calculated temperatures is, however, 0°8. As the tempera- 
tures of this cable undergo great fluctuations however, it is questionable whether 
greater exactness might not be obtained if a series of resistance and temperature 
measurements with intervals of but a few days was made. 
The calculations have given the following results: 
Newbiggin—Marstrand 
1902 1903 1904 1905 - 
Calcul. Obs. Caleul. Obs. Calcul. Obs. Calcul. Obs: 
Temp. Temp. Temp. Temp. Temp. Temp. Temp. Temp. 
January 22.2... ane 6°9 ae 7°3 a 7°1 
WEIDAURIAPS a oo oc ate 6°4. pir 6°7 “ar 65 63 
March . . ... ahs nk 6°3 er 5°8 Je 6°3 
April ee er ae 6°0 Fe 593 ue 5°8 
Maye ner. ete a 6°4 6°2 6°2 5°8 5°9 ST. 
JUNE 2A ee oar Bes 6°3 Hie: 6°2 sie 6°4 
July A aly 6°5 Se 6°4 ats 6°5 
Aussi 6°S ae 70 M. 7 TS 7 
Saptembertild yl Bat kt NIORT ETIENNE CS 
October .... 7°2 hs 7°6 ns 1°2 Be er 
November... 7°8 79 7°6 7°8 7°7 8°9 7°8 
December ... 7°6 vel 7°4 AR, 724: 
