mil i Timen, det er 0.”5 til 1” i Secundet, saa har jeg 
ikke fundet mig opfordret til at beregne Vindhastighederne 
for 1876 paany efter de corrigerede Aflæsninger af Vind- 
maaleren, undtagen for de Observationer, som ere tagne, 
naar Skibet laa tilankers. 
I 1877 og 1878 benyttedes en ny Vindmaaler, . der 
var arbejdet i Christiania af Instrumentmager M. Wiig efter 
min Tegning. Fig. 5 viser Instrumentet i +/, af den sande 
Størrelse, saaledes som det holdes under en Observation. 
Fig. 6 viser Registreringsmekanismen, seet forfra, og Fig. 7 
den samme, seet fra Siden, begge i sand Maalestok. For 
at vere sikker paa det rigtige Forhold mellem Vindhastig- 
heden og Kuglecentrernes Hastighed tog jeg de samme Di- 
mensioner som ved den ovenfor nævnte, i St. Petersburg af 
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1” per second, I have not seen fit to re-compute the wind- 
velocities for 1876 from the corrected readings of the ane- 
mometer, save in the case of such observations as were 
taken when the ship lay at anchor. 
In 1877 and 1878, the anemometer used was an in- 
strument constructed in Christiania from my own design, by 
Mr. M. Wiig. 
Fig. 5 represents this anemometer */i of 
the actual size, as held when taking an observation. Fig. 6 
shows the registering part of the instrument, front view; 
and Fig. 7 the same mechanism, side view, both actual 
size. To make sure of the true ratio between the velocity 
of the wind and that of the cup centres, I took the dimen- 
sions of the anemometer tested at St. Petersburg by Mr. 
