Page:Great Neapolitan Earthquake of 1857 Vol 2.djvu/395

330 which gives a transit rate of 6s·14 per geographical mile, and a transit velocity $$= 989.4$$ feet per second. This is the highest velocity obtained, which is what should be expected, inasmuch as more than one-half of the entire distance, is through comparatively level bedded, and little shattered rocks, of elasticity, quite as high as the limestone.

Atella is 21 geographical miles from the seismic vertical—

which gives 8s·4 nearly for the transit rate per geographical mile, and a transit velocity $$= 723.2$$ feet per second.

Barielle is 24·5 geographical miles from the seismic vertical—

which gives 8·04s for the transit rate per geographical