UNDER the title of this book it is proposed to describe and illustrate only those fictitious and symbolic creatures which appear in British Heraldry. The list will include all those beings of whose existence we have not the direct evidence of our senses, and those exaggerations and combinations of natural forms which have been adopted in the system of symbolic heraldry handed down to us from the Middle Ages. Many of the ideas of the writers of that period were undoubtedly derived from still earlier sources, namely, classic story, sacred and legendary art, and the marvellous tales of early travellers; others were the coinage of their own fancies and their fears.