▁ways . ▁The ▁S iles ian ▁German ▁dialect ▁is ▁often ▁mis leading ▁referred ▁to ▁as ▁Lower ▁S iles ian ▁in ▁the ▁German ▁language . ▁The ▁usage ▁of ▁this ▁dialect ▁appears ▁to ▁be ▁decre asing , ▁as ▁most ▁S iles ian ▁Germ ans ▁prefer ▁either ▁Standard ▁German ▁or ▁even ▁Polish . ▁ ▁Pr uss ian ▁Upper ▁S iles ia ▁in ▁ 1 7 9 0 - 1 9 1 0 ▁The ▁earliest ▁exact ▁census ▁figures ▁on ▁eth n ol ingu istic ▁or ▁national ▁structure ▁( National ver schied en heit ) ▁of ▁the ▁Pr uss ian ▁part ▁of ▁Upper ▁S iles ia , ▁come ▁from ▁year ▁ 1 8 1 9 . ▁The ▁last ▁pre - W W 1 ▁general ▁census ▁figures ▁available , ▁are ▁from ▁ 1 9 1 0 ▁( if ▁not ▁including ▁the ▁ 1 9 1 1 ▁census ▁of ▁school ▁children — Sp rach z ähl ung ▁unter ▁den ▁Schul kind ern — which ▁revealed ▁a ▁higher ▁percent ▁of ▁Polish - spe akers ▁among ▁school ▁children ▁than ▁the ▁ 1 9 1 0 ▁census ▁among ▁the ▁general ▁popul ace ). ▁Fig ures ▁( Table ▁ 1 .) ▁show ▁that ▁large ▁dem ographic ▁changes ▁took ▁place ▁between ▁ 1 8 1 9 ▁and ▁ 1 9 1 0 , ▁with ▁the ▁region ' s ▁total ▁population ▁quad ru pling , ▁the ▁percent ▁of ▁German - spe akers ▁increasing ▁significantly , ▁and ▁that ▁of ▁Polish - spe akers ▁decl ining ▁consider ably . ▁Also ▁the ▁total ▁land ▁area ▁in ▁which ▁Polish ▁language