TABLE 1 14. 



SUMMARY OF RESULTS OF THE VALUE OF GRAVITY (</) AT STATIONS 

 IN THE UNITED STATES, OCCUPIED BY THE U. S. COAST AND 

 GEODETIC SURVEY DURING THE YEAR 1894.* 



TABLE 1 15. 



LENGTH OF SECONDS PENDULUM AT SEA LEVEL FOR DIFFERENT 



LATITUDES, t 



* G. R. Putnam, Phil. Soc. of Washington, Bull. vol. xiii. 



t Taken as standard. The other values were obtained from this by means of invariable pendulums, 

 t Calculated from force of gravity table by the formula l = g] ir-. For each 100 feet of elevation subtract 0.000596 

 centimetres, or 0.000235 inches, or .0000196 feet. 



SMITHSONIAN TABLES. 



IO4 



