Report of Dr. Torrey, on the Botanical Department of the Geological Survey of New York

abundant appears associated August banks beds called carbonate character clay colour common contains continued course creek crystals deposits described direction distance district east elevation examination exist extent fact falls feet fields formation fossils furnish geological Gray green grit grounds hills Hudson important inches interesting iron July June known lake land layers lead less lime limestone localities lower mass materials matter Michx miles mineral mountain nearly New-York northern noticed numerous observed obtained occurs ORDER pass places portion present probably produced quantity quarries range remains remarkable river road rock Rocky salt sand sandstone Sandy seen shale shells side similar slate soil sometimes species specimens springs stone strata streams surface Swamps thick thin tion upper valley variety various vein western whole woods