Thirdly, it destroys all homogenousness and unity of tone in the periodical, by preventing it from having any permanent corps of writers. The editors must furnish good articles now and then, to carry off their ordinary vapid matter; and, accordingly, they are sometimes under the disagreeable necessity of paying for them;[51] but not sufficiently often to make it worth the while of a writer to whom the pecuniary consideration is an object, to attach himself permanently to any of their concerns. Hence, those men who expect to derive any appreciable part of their income from writing in periodicals, are continually changing their colours, and essentially migratory. And as the principal attraction of the unpaid writers is their variety, which is best provided for by frequently changing the supply of them, while one great inducement to themselves is the gratification of their vanity, which is best promoted by their appearing in the greatest number of periodicals, they also become migratory and without permanent connexion. Accordingly it is not uncommon for a periodical to change its opinions on men and things three or four times a-year. Frequently, too, these changes are accompanied by disputes about unsettled accounts and other private matters, which have an awkward tendency to influence the subsequent critical and editorial opinions of both parties. Now and then they lead to libel suits,--sometimes to still greater extremities. Mr Colton, editor of the _American Review_, had occasion to dispense with the services of a young Kentuckian with whom he was at first connected. (It is but justice to the former gentleman to say, that there were no short-comings on his part; his only error seems to have been entangling himself with an unworthy assistant in the first place.) The discharged assistant forthwith issued a pamphlet against Mr Colton, of which that gentleman had the good sense to take not the slightest notice, and his example was pretty generally followed. Furious at this contempt, the Southerner attacked his late principal in the street with a life-preserver. Fortunately Mr Colton possessed a fair share of what never comes amiss with an editor, especially an American editor,--personal prowess. In the scuffle which ensued, he upset his assailant, and carried off the _spolia opima_ in the shape of the bludgeon aforesaid.