Insects.—Dytiscus ([p. 361]) lays eggs. Pupae of cabbage-white butterflies and other Lepidoptera may be found.
APRIL.
PLANT LIFE.
Plants usually in flower.—Wallflower, shepherd’s purse, buttercup, anemone, marsh marigold, common vetch, plum, pear, strawberry, primrose, cowslip, daisy, dandelion, speedwell, red deadnettle, daffodil, wild hyacinth, wild tulip, rushes, arum, annual meadow grass, oak, birch, alder, willow, poplar, elm, ash, and others.
Trees which unfold their leaf-buds.—Larch, horse chestnut, beech, elm, sycamore.
Elm fruits ([p. 154]) are abundant; study the method of dispersal ([p. 173]).
Corn.—Barley and oat sowing continued.
ANIMAL LIFE.