the encounter of tinuviel with melko is given with far more detail than in the silmarillion ( here much compressed from its source ) ; notable is the phrase ( p. 32 ) 'he leered horribly , for his dark mind pondered some evil ' , forerunner of that in the silmarillion ( p. 180 ) : then morgoth looking upon her beauty conceived in his thought an evil lust , and a design more dark than any that had yet come into his heart since he fled from valinor .