A The purpose the place we to start with met this formation it had been one hundred twenty price in thickness; next up the river study course, the surfac imperceptibly rose plus the mass turned thicker, to ensure that a forty miles above the very first station it had been 320 ft thick What the thickness could possibly be near the Cordillera, I hav

A the point the place we first met this development it had been a hundred and twenty fee in thickness; next up the river program, the surfac imperceptibly rose as well as the mass became thicker, to ensure that a forty miles higher than the initial station it had been 320 ft thick What the thickness might be near the Cordillera, I hav no means of r