Justin, Phil., [277]

Kahl, W., [10], [162]

Kant, I., [4], [29], [35], [36], [37] et seq., [43] et seq., [46] et seq., [54], [63], [64], [77], [132], [167], [179], [250], [263], [269], [272], [287], [293], [313], [363]

Kaufmann, G., [17], [150], [153], [155], [162], [309]

Kelvin, Lord (see [Thomson])

Kepler, J., [4], [125], [184], [185], [187], [191], [195] et seq., [201] et seq.

Kepler-Bund, [333]

Kirchhoff, G. R., [4]

Kleinpeter, H., [35]

Kneller, [7], [208]