DEVELOPMENTS OF SURVEY IN JAMAICA

Abstract

The Primary Triangulation did not cover completely the eastern end of the Island and it was required to carry the net out to the coastline in this region. Two additional primary stations have now been selected to admit of this extension. The lines straddle the John Crow mountains, which were one of the great obstacles at this end, and one point is actually on the lighthouse t at the eastern extremity of Jamaica. Since observations are needed from one side only of the lighthouse, we have put a special bracket on the balustrade of the lantern gallery to support the theodolite; the beacon is plumbed upside down below this. I enclose three photographs to illustrate it.