On the Origin and Distribution of the British Flora. 87 L. "Holt's Chantry Brook." R. "Haningfield Brook." L. Ter. 12 miles. L. "Fairstead Brook." L. Blackwater or Pant. 28 miles. L. Oyn's or Domsey Brook. L. "Tiptree Brook." B. Rivenhall or Cressing Brook. E. Brain or Podsbrook. R. "Woodham Mortimer Brook." R. "Haseleigh Brook." L. "Totham Brook." L. Lime Brook. Colne. 36 miles. R. "Gosfield Brook." L. "Pebmarsh Brook." L. "Greenstead Brook." R. Roman River, Tay, or Aldham Brook. R. Layer Brook. Stour. 45 miles. R. "Belchamp "Water." R. "Bures Brook." R. "Nayland Brook." [L. Brett. 17 m.] [L. Boxford.] [L. Orwell and Gipping. 32 m.] Brook or Granta. L. "Arkesdon Brook." L. "Wendon Brook." R. Slade. Addenda and Corrigenda to p. 80.—Line 13, after "Bed- fordshire" add "in Seagrave Marsh, near Dunstable" ; 1. 17, after "Roydon" add "and Hoddesdon"; 1. 20, after "fifty" add "five"; 1. 23, after "Mills" add "near Clavering"; 1. 2 from bottom, after "Easton" add "above Little Canfield."