It also became clear that the disease is common near irrigated fields where mosquitoes abound.
Included on the seal is a miner beside an irrigated field with the sun rising in the background.
The members had allocated plots of their irrigated fields to black farmers who could keep the vegetables they grew.
"No, the cliffs over there are still the same dusty brown, but the basin floor looks like an irrigated field in spring," Kirk said.
The corn was doing well this year in the irrigated fields.
The economy is based on the produce of fruit trees growing in irrigated fields.
Cotton is represented by the irrigated fields slightly right of the midline.
Adults are attracted to flowers at the edge of irrigated fields.
Their ideal is a marsh, an irrigated field, or a potted plant on a patio.
It needs access to water but is not found in irrigated fields.