Achillea millefolium, bud variation in, i. 408.
Aconitum napellus, roots of, innocuous in cold climates, ii. [274].
Acorus calamus, sterility of, ii. [170].
Acosta, on fowls in South America at its discovery, i. 237.
Acropera, number of seeds in, ii. [379].
Adam, Mr., origin of Cytisus Adami, i. 390.
Adam, W., on consanguineous marriages, ii. [123].
Adams, Mr., on hereditary diseases, ii. [7].
Advancement in scale of organisation, i. 8.
Ægilops triticoides, observations of Fabre and Godron on, i. 313;