Aitchison, Mr., on sheep.
Aithurus polytmus, young of.
Albino birds.
Alca torda, young of.
Alces palmata.
Alder and Hancock, MM., on the nudi-branch mollusca.
Allen, J.A., vigour of birds earliest hatched; effect of difference of temperature, light, etc., on birds; colours of birds; on the relative size of the sexes of Callorhinus ursinus; on the name of Otaria jubata; on the pairing of seals; on sexual differences in the colour of bats.
Allen, S., on the habits of Hoplopterus; on the plumes of herons; on the vernal moult of Herodius bubulcus.
Alligator, courtship of the male; roaring of the male.
Amadavat, pugnacity of male.