THE PLUMB-LINE IN PORTO RICO.

Stratford Evening Post, Volume XXXI, Issue 28, 18 September 1911, Page 7

THE PLUMB-LINE IN PORTO RICO.

Among the curious discoveries made by men of science in their innumerable efforts to Wuisure and map the earth wifi) the least possible on or are places where the direction of plumb ”•? is not vertical. Irraqul.iviti?". of density in the crust of the 'globe may produce this phenomenon. A roirw vkable instance in point was found in the island of Porto E.ico. where t : - deviation from I lie vertical is so groat that, in mapping flic island, the northern and southern coast lines, as shown in the older maps, had each to be moved inward half a .rrd'e HATUNTL L EodShv; N'k. Rccoi da kept on. too ■L -- ati;wM ; ceai to indicate that, actual rhieurrim - ■- tiib level of the hind may occasion-. I)., bo observed. In the valley of the Maine a church tower hidden behind a mountain screen has, since 1801, gradually risen into plain view from the chateau of Stroessendorf, and still farther in the same direction another church tower which began to he visible from Stroessondorf, 80 years ago. is. now clearly seen above the horizon, ami is. said to rise higher as time, goes on. Similar records exist'in Bohemia, in Switzerland, in Spain, and m the French Jura.