EMBRYOLOGY.--The study of the development of the embryo.
ENDEMIC.--Peculiar to a given locality.
ENTOMOSTRACA.--A division of the class Crustacea, having all the segments
of the body usually distinct, gills attached to the feet or organs of the
mouth, and the feet fringed with fine hairs. They are generally of small
size.
EOCENE.--The earliest of the three divisions of the Tertiary epoch of
geologists. Rocks of this age contain a small proportion of shells
identical with species now living.
EPHEMEROUS INSECTS.--Insects allied to the May-fly.
FAUNA.--The totality of the animals naturally inhabiting a certain country
or region, or which have lived during a given geological period.
FELIDAE.--The Cat-family.
FERAL.--Having become wild from a state of cultivation or domestication.
FLORA.--The totality of the plants growing naturally in a country, or
during a given geological period.
FLORETS.--Flowers imperfectly developed in some respects, and collected
into a dense spike or head, as in the Grasses, the Dandelion, etc.
FOETAL.--Of or belonging to the foetus, or embryo in course of development.
FORAMINIFERA.--A class of animals of very low organisation and generally of
small size, having a jelly-like body, from the surface of which delicate
filaments can be given off and retracted for the prehension of external
objects, and having a calcareous or sandy shell, usually divided into
chambers and perforated with small apertures.
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