Mathematics. Collected works.
Huygens, Christiaan. 1629-1695. *+*5081.24 Oeuvres compldtes. Publiees par la societé hollan- daise des sciences. Tome 1-4. La Haye. 1888. v 4°. For further additions, see Huygens, Christian. 1629-1695. Contents: 1. Correspondance-1638-1656. 2. Corre= spondence-1657-1659. 3. Correspondance-1660-1661. 4. Correspondance+1662=1663. (Continued)