Carrington, [59], [75].

Clark, [258].

Copernicus, [80].

Crookes, [232], [297], [298].

Crowell, [28].

D’Arrest, [257].

Darwin (Charles), [28].

Dewar, [213].

Draper (Dr.), [4], [7], [214], [217].

Dulong, [215].