Feltham Urban District grounds of St Mary's Church, Bedfont, which are accepted as local emblems. The winged sword stands for London Airport and the district's close association with the aircraft industry. The sword also refers to the Royal Army Ordnance Depot, and to the ancient sword-mill marked on a 17th-century map. The gunstones also allude to the R.A.O.C. Depot, and to the powder mills which formerly existed in the Crane Valley. The hawthorn refers to the Spelthorne Hundred, and the eagle is a reference not only of air traffic, but also of the Roman-founded London to Bath (Aquae Sulis) and Calleva Atrebatum (town
Aphanizomenon flos-aquae Aphanizomenon flos-aquae Aphanizomenon flos-aquae is a brackish and freshwater species of cyanobacteria found around the world, including the Baltic Sea and the Great Lakes. "Aphanizomenon flos-aquae" can form dense surface aggregations in freshwater (known as "cyanobacterial blooms"). These blooms occur in areas of high nutrient loading, historical or current. "Aphanizomenon flos-aquae" has both toxic and nontoxic forms. Most sources worldwide are toxic, containing both hepatic and neuroendotoxins. Most cyanobacteria (including "Aphanizomenon") produce BMAA, a neurotoxin amino acid implicated in ALS/Parkinsonism. Toxicity of "A. flos-aquae" has been reported in Canada, Germany and China. "Aphanizomenon flos-aquae" is known to produce endotoxins, the