DESCRIPTION OF THE PLATES.

PLATE I.

FIG 1.-Shows the roughly trapezoidal, and slab-shaped form. The drifteffect developed over the whole principal surface shows clearly only on the more strongly illumined parts. In front, below, is the slightly inclined surface over which the drift-effect is continued uninterruptedly wherever the crust is preserved, so that these two surfaces together form the front of the meteorite. The bright edge on the left has been chipped and covered with a poorly developed secondary crust. The other surface is inclined at almost right angles to the principal surface, and one can see the sharp edges in which these meet. FIG. 2. The figured side, almost at right angles to the principal surfaces, has a finely wrinkled crust with no drift-effect. Below, on the right, is seen the place where the wedge-shaped piece has broken off; here, on the two bevelled edges on the right and left, as well as on the two arms stretching over the surface, the stone shows a secondary crust.

PLATE II.

FIG. 1. The back, uniformly covered with scar-like impressions and wrinkled primary crust; towards the edge traces of drift-effect are to be seen. On the lower edge the secondary crust can be clearly distinguished from the primary

crust.

FIG. 2.--Front, with shallow scar-like impressions and drift-effect radiating from the crown uniformly in all directions; on the right half the slight depression of the surface is observable. The darker parts at the edge are covered with primary, the lighter ones with secondary, crust. The drift-effect of the primary crust on the slightly sloping side on the right is in reality much sharper than the photograph shows.

PLATE III.

FIG. 1. Shows the structure, slightly enlarged.

FIG. 2. Enstatite chondrule with the confused radiated structure; an example of the chondrules most common in this stone.

FIG. 3.-Vertical section through the crust. The three zones are indicated only in the middle portion bounded by two cracks, and not clearly there. Still, one can see that silicates are sparsely present, and are of smaller dimensions than in the matrix.

FIG. 4. Two nickel-iron chondrules. Of these, one encloses a small enstatite chondrule, the other isolated enstatites. The chondrule next to the latter is one of the rare ones, which are made up of a few broad enstatite crystals.

FIG. 5. Chondrule, with diverging radiated structure, with indentations and numerous inclusions of iron pyrites. The section was treated with copper sulphate solution, and the surrounding nickel iron appears, in consequence, in larger connected particles than is actually the case.