HUYGENS, Christiaan

4 parts in 1 vol. in-4to, complete with portrait, [16], 776, [18] pp. Ill. with 2 identical engr. vign. on title and 56 folding engraved plates Including ""Tractatus de lumine"" which proposed that light travelled in waves, and his article on the pendulum clock ""Horologium oscillatorium"". Some browning and spotting. Cont. calf, spine with 6 raised bands, red title label (one joint broken, a bid rubbed). Good copy