THE NATURALIST'S CALENDAR 391 



Mar. 19. April 13 Small uncrested wren ap. 



19 Fumaria bulbosa fl. 



19. April 4 Ulmus campestris (elm) fl. 



19. April 7 Turkey lays. 



20 House pigeons sit. 



20. April 14 Caltha palustris (marsh marigold) fl. 



21. April 28 Bombylius medius ap. 



21. April 12 Sand-martin ap. 



22-30 Coluber natrix (snake) ap. 



22. April 1 8 Formica herculeana (horse ant) ap. 



22. April 22 Greenfinch sings. 



23. April 14 Ivy berries ripe. 



25 Vinca minor (periwinkle) fl. 



25. April i Daphne laureola (spurge laurel) fl. 



26. April 20 Swallows ap. 



26. May 4 Black-cap whistles. 

 27 Ducks hatched. 



27. April 9 Chrysosplenium oppositifol. fl. 



28. May i House martin ap. 



28. April 13 Chimney swallow ap. 



29. April 22 Double hyacinth blows. 

 29 Young goslings. 



30. April 22 Oxalis acetosella (wood sorrel) fl. 



30. April 1 7 Ring ouzel ap. 



31. April 30 Barley sown. 

 April i. May i Nightingale sings. 



i . May 4 Fraxinus excels, (ash) fl. 



1 Spiders' webs on the surface of the 



ground. 

 2-24 Fritillaria meleagris fl. 



2 Julus terrestr. ap. 



3-24 Primula veris (cowslip) fl. 



3-15 Glecoma hederacea (ground-ivy) fl. 



3 Snipe pipes. 



3 Buxus (box-tree) fl. 



3 Ulmus campest. (elm) 1. 



3-14 Gooseberry fl. 



3-5 Currant fl. 



3. May 21 Pear-tree fl. 



