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 18 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 17 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 Glccoma hederacea (ground-ivy) fl. 



3 Snipe pipes. 



3 Buxus (box-tree) fl. 



3 Ulmus campest. (elm) L 



3-14 Gooseberry fl. 



3-5 Currant fl. 



3. May 21 Pear-tree fl. 



