'That's a very queer story,' said Cotgrave, handing back the green book to the recluse, Ambrose. 'I see the drift of a good deal, but there are many things that I do not grasp at all. On the last page, for example, what does she mean by "nymphs"?'  
'Well, I think there are references throughout the manuscript to certain "processes" which have been handed down by tradition from age to age. Some of these processes are just beginning to come within the purview of science, which has arrived at them—or rather at the steps which lead to them—by quite different paths. I have interpreted the reference to "nymphs" as a reference to one of these processes.'
 
'And you believe that there are such things?'
 
'Oh, I think so. Yes, I believe I could give you convincing evidence on that point. I am afraid you have neglected the study of alchemy? It is a pity, for the symbolism, at all events, is very beautiful, and moreover if you were acquainted with certain books on the subject, I could recall to your mind phrases which might explain a good deal in the manuscript that you have been reading.'[164]
 
'Yes; but I want to know whether you seriously think that there is any foundation of fact beneath these fancies. Is it not all a department of poetry; a curious dream with which man has indulged himself?'
 
'I can only say that it is no doubt better for the great mass of people to dismiss it all as a dream. But if you ask my veritable belief—that goes quite the other way. No; I should not say belief, but rather knowledge. I may tell you that I have known cases in which men have stumbled quite by accident on certain of these "processes," and have been astonished by wholly unexpected results. In the cases I am thinking of there could have been no possibility of "suggestion" or sub-conscious action of any kind. One might as well suppose a schoolboy "suggesting" the existence of ?schylus to himself, while he plods mechanically through the declensions.
 
'But you have noticed the obscurity,' Ambrose went on, 'and in this particular case it must have been dictated by instinct, since the writer never thought that her manuscripts would fall into other hands. But the practice is universal, and for most excellent reasons. Powerful and sovereign medicines, which are, of necessity, virulent poisons also, are kept in a locked cabinet. The child may find the key by chance, and drink herself dead; but in most cases the search is educational, and the phials contain precious elixirs for him who has patiently fashioned the key for himself.'
 
'You do not care to go into details?'
 
'No, frankly, I do not. No, you must remain unconvinced. But you saw how the manuscript illustrates ............