Our fairies are fairies in the modern sense. We will make it a rule, from the beginning, that they must be small, and we will put out any who are above the regulation height.  

Such as the charming famous MELUSINA, who wails upon her tower at the death of a LUSIGNAN, we may as well skip; for she is a tall young lady, with a serpent's tail, to boot, and thus, alas! half-monster; for if we should accept any like her in our plan, there is no reason why we should not get confused among MERMAIDS and DRYADS, and perhaps end by scoring down great JUNO herself as a fairy! Many a DWARF and GOBLIN, whom we shall meet ANON, is as big as a child.  

"ELF" and "GOBLIN," too, are interesting to trace. There was a great Italian feud, in the twelfth century, between the German Emperor and the Pope, whose separate partisans were known as the GUELFs and the GHIBELLINEs. 

As time went on, and the memory of that long strife was still fresh, a descendant of the Guelfs would put upon anybody he disliked the odious name of Ghibelline; and the latter, generation after generation, would return the compliment ardently, in his own fashion. Both terms, finally, came to be mere catch-words for abuse and reproach. And the fairies, falling into disfavor with some bold mortals, were angrily nicknamed "elf" and "goblin"; in which shape you will recognize the last threadbare reminder of the once bitter and historic faction of Guelf and Ghibelline.