(CXI.) TO THE MARQUIS OF BRANDENBURG, Sept. 1657:—­This is an important letter.  “By our last letter to your Highness,” it begins, “either already delivered or soon to be delivered by our agent WILLIAM JEPHSON, we have made you aware of the legation intrusted to him; and we could not but there make some mention of your high qualities and signification of our goodwill towards you.  Lest, however, we should seem only cursorily to have touched on your superlative services in the Protestant cause, celebrated so highly in universal discourse, we have thought it fit to resume that subject, and to offer you our respects, not indeed more willingly or with greater devotion, but yet somewhat more at large.  And justly so, when news is brought to our ears every day that your faith and constancy, though tempted by all kinds of intrigues, solicited by all contrivances, yet cannot by any means be shaken, or diverted from the friendship of the brave King your ally,—­and that too when the affairs of the Swedes are in such a posture that, in preserving their alliance, it is manifest your Highness is led rather by regard to the common cause of the Reformed Religion than by your own interests; when we know too that, though surrounded on all sides, and all but besieged, either by hidden or nearly imminent enemies, you yet, with your valiant but far from large forces, stand out with such firmness and strength of mind, such counsel and prowess of generalship, that the sum and weight of the whole business seems to rest, and the issue of this war to depend, mainly on your will.”  The Protector goes on to say that, in such circumstances, he would consider it unworthy of himself not to testify in a special manner his sympathy with the Elector and regard for him.  He apologizes for delay hitherto in treating with the Elector’s agent in London, JOHN FREDERICK SCHLEZER, on the matters about which he had been sent; and he closes with fervent good wishes.—­Evidently, the recognition of the importance of the Elector, and anxiety as to the part he might take in the war now involving Sweden, Denmark, Poland, and part of Germany, had been growing stronger in Cromwell’s mind within the last few weeks.  From the language of the letter one would infer either that Cromwell did not yet fully know of that treaty of Nov. 1656 by which the Polish King had bought off the Elector from the Swedish alliance by ceding to him the full sovereignty of East Prussia, or else that since then the Elector had been oscillating back to the alliance.—­SCHLEZER had been in London since 1655, and had lodged at Hartlib’s house in the end of that year.[1]

[Footnote 1:  Letter of Hartlib’s in Worthington’s Diary and Correspondence, edited by Crossley (I, 66).]

Ten Latin State-letters nearly all at once, implying as they do consultations with Thurloe, if not also interviews with the Protector and the Council, argue a pretty considerable demand upon Milton at this date for help again in the Foreign Secretaryship.