Longitude (deg): -1.2. Latitude (deg): 51.4. Longitude (deg/min): 1° 10' W. Latitude (deg/min): 51° 20' N. Vice county name: Berks. Vice county no.: 22. Country: England. Identified by: Malcolm Storey. Comment: small floating mats in garden pond. Detail to note: starch granules stained dark. Category: microscope photograph. Image scaling: magnified. Real world width(mm): 0. Photographic equipment used: Nikon D100 dSLR with Meiji microscope using x2.5 projection eye-piece.