Even in such wise, if you will, that all the six faces are equal and similar rhombuses.

The figure here added represents a piece of this Crystal.

The obtuse angles of all the parallelograms, as C, D, here, are angles of 101 degrees 52 minutes, and consequently the acute angles, such as A and B, are of 78 degrees 8 minutes.
5.

Of the solid angles there are two opposite to one another, such as C and E, which are each composed of three equal obtuse plane angles.
The other six are composed of two acute angles and one obtuse.

All that I have just said has been likewise remarked by Mr.Bartholinus in the aforesaid treatise; if we differ it is only slightly about the values of the angles.