Lycopodium is a fine powder, the seed, or more correctly the spores, of a club moss. These are members of a curious family of cryptogamous plants that,' from the demand in commerce for the spores ...

STONEY states (NATURE, January 6, vol. lxxxii., p. 279) that with a large aperture microscope objective and oblique illumination, Lycopodium spores are seen to be coated with hair-like projections.

1. The central cylinder originates independently of the leaf traces from a group of meristematic cells situated just below the apex. 2. The central stele is an exarch radial protostele consisting of ...