[25] The historical account by Bonnier, Cours de Botanique, is very interesting and complete.
[26] The pollen from the great pine forests of the Italian Alps blown up to the snow becomes used in nourishing the Pink or Red Snow Algæ, which colours it a delicate rose-pink. In lower grounds all such pollen becomes, like leaf-mould, a manure for other plants. There is no waste, strictly speaking.
[27] Pharmaceutical Journal, May 20th, 1899.
[28] Buscalioni e Traverso, Atti del Ist. Bot. di Pavia, vol. 10, 1904.
[29] Von Buttel, Respen.
[30] Linnæus and many others have made Floral Clocks. Kerner, Natural History of Plants, describes the opening and closing of flowers very fully.
[31] Huck, Unsere Honig u. Bienenpflanzen. These are drawn up for Germany, and cannot be warranted for this country.
[32] Memories of the Months.
[33] Compare Shelley, who watched all day "the yellow bees in the ivy bloom," but he "did not heed what things they be." Moreover, though he appreciated the general spirit of the bee, it is very unlikely that he saw any of them on the Ivy!
[34] Kerner and Oliver, l.c., vol. 1, p. 88.