[1] It is strange, or rather it is _not_ strange, considering the feebleness of that lady in such a field, that Miss Edgeworth always fancied herself to have caught Milton in a bull, under circumstances which, whilst leaving the shadow of a bull, effectually disown the substance. 'And in the lowest deep a lower deep still opens to devour me.' This is the passage denounced by Miss Edgeworth. 'If it was already the lowest deep,' said the fair lady, 'how the deuce (no, perhaps it might be _I_ that said '_how the deuce_') could it open into a lower deep?' Yes, how could it? In carpentry, it is clear to my mind that it could _not_. But, in cases of deep imaginative feeling, no phenomenon is more natural than precisely this never-ending growth of one colossal grandeur chasing and surmounting another, or of abysses that swallowed up abysses. Persecutions of this class oftentimes are amongst the symptoms of fever, and amongst the inevitable spontaneities of nature. Other people I have known who were inclined to class amongst bulls Milton's all-famous expression of '_darkness visible_,' whereas it is not even a bold or daring expression; it describes a pure optical experience of very common occurrence. There are two separate darknesses or obscurities: first, that obscurity _by_ which you see dimly; and secondly, that obscurity _which_ you see. The first is the atmosphere through which vision is performed, and, therefore, part of the _subjective_ conditions essential to the act of seeing. The second is the _object_ of your sight. In a glass-house at night illuminated by a sullen fire in one corner, but else dark, you see the darkness massed in the rear as a black object. _That_ is the 'visible darkness.' And on the other hand, the murky atmosphere between you and the distant rear is not the object, but the medium, through or athwart which you descry the black masses. The first darkness is _subjective_ darkness; that is, a darkness in your own eye, and entangled with your very faculty of vision. The second darkness is perfectly different: it is _objective_ darkness; that is to say, not any darkness which affects or modifies your faculty of seeing either for better or worse; but a darkness which is the _object_ of your vision; a darkness which you see projected from yourself as a massy volume of blackness, and projected, possibly, to a vast distance.