+---------------------+-------+--------------------------+----------+ | |Approx.| | | | |rate in| Formation constituting | | | Occasion and Place |feet | Range on surface as far |Authority | | | per | as known or conjectured | | | |second | | | +---------------------+-------+--------------------------+----------+ |Rev. John Mitchell’s |1,760 |Sea bottom, probably on | Mitchell | | guesses from the | | slates, secondary and | | | Lisbon earthquakes | | crystalline rocks | | |Von Humboldt’s |1,760 |From observations in | Humboldt | | guesses from South | to | various South American | | | America |2,464 | rocks in great part | | | | | volcanic | | | | | | | | _Lisbon Earthquake | | | | | of 1761._ | | | | |Lisbon to Corunna |1,994 |Transition, carboniferous | ‘Annual | | | | and granitoid |Register’ | |Lisbon to Cork |5,228 |Transition, carboniferous | „ | | | | crystalline slates and | | | | | granitoid, probably, | | | | | under sea bottom | | |Lisbon to Santa Cruz |3,261 |The same with many | „ | | | | alterations | | | | | | | | _Antilles._ | | | | |Pointe à Pitre to |6,586 |Probably volcanic rocks |Stier and | | Cayenne (doubtful) | | under sea bottom | Perrey’s | | | | | memoran- | | | | |dum, Dijon| | | | | | | _India._ | | | | |Cutch to Calcutta, |1,173 |Alluvial, secondary, | ‘Royal | | 1819 | | granitoid and later | Asiatic | | | | igneous rocks | Journal’ | |India, Nepauls, and | | | | | basin of the Ganges,| | | | | 1834:-- | | | | |Rungpur to Arrah |2,314 }|Deep alluvia, with | ‘Royal | |Monghyr to Gorackpur |3,520 }| occasional transition, | Asiatic |