[1] After an ordinary school education in his native town, he obtained employment in a business house in Bristol.
[2] At the Bristol Philosophical Institution for lectures, he encountered William Sanders and Samuel Stutchbury, and in 1850 was appointed curator of its museum.
His chief work for many years was in naming the fossils collected during the progress of the Geological Survey, and in supplying the lists that were appended to numerous official memoirs.
Etheridge also was author of several papers on the Rhaetic Beds, and of an important essay on the Physical Structure of North Devon, and on the Palaeontological Value of the Devonian Fossils (1867).
Etheridge is quoted in creationist literature as saying: In all this great museum there is not a particle of evidence of transmutation of species.