Prism and spectrum of light.

Spectroscope with five prisms, Rome, Italy, 1876.

Regular polyhedra, c 1965.

Regular polyhedra, c 1965.

Solar spectroscope, 1881.

Experiments on the nature of colour, 1704.

Table of curves, 1704.

Ray diagrams, 1704.

Experiments on the nature of colour, 1704.

Table of curves figures 65 to 78, 1704.

Table of formulae on curved forms, 1704.

Experiments on differential refrangibility, 1704.