238 



PROFESSOR HANSTEEN ON THE MEAN HEIGHT OF 



The formula gives a minimum for <p = 0', and (p = 68°'23'8, and a maximum 

 for (/) = 36'-12'6, and ^ = Q(f. The following table gives -4/ for every fifth degree 

 of latitude. 



So in the original, and also in ScHOUw's Tables; but surely a mistake. — J. D. F. 



