Note 1 — Chapter I · On the Indistinctness of Ideas of the Middle Ages.
Reading edition
Lucan is describing one of the poetical compounds produced in incantations.
Huc quicquid fœtu genuit Natura sinistro Miscetur: non spuma canum quibus unda timori est, Viscera non lyncis, non duræ nodus hyænæ Defuit, et cervi pasti serpente medullæ; Non puppes retinens, Euro tendente rudentes In mediis Echineis aquis, oculique draconum. Etc. Pharsalia, vi. 670.