To his future biographer Mr. Cooper has left the pleasing duty rightly to estimate the breadth and depth of his powerful intellect--psychologically to investigate the development and functions of that cerebral organ, which for so many years, with such rapid succession and variety, poured out the creations of poetic thought and descriptive illustration--to determine the value of his capacious mind by the influence which, in the dawn of American literature, it has exercised, in rearing the intellectual fabric of his country's greatness--and to unfold the secret springs of those disinterested acts of charity to the poor and needy, which signalized his conduct as a professor of religious truth, and a true exampler of the Christian graces. He has unquestionably done more to make known to the transatlantic world his country, her scenery, her characteristics, her aboriginal inhabitants, her history, than all preceding writers. His death may well be pronounced a national calamity. By common consent he long occupied an enviable place--the highest rank in American literature. To adopt the quaint phraseology of old Thomas Fuller, the felling of so mighty an oak must needs cause the increase of much underwood. Who will fill the void occasioned by his too early departure from among us, time alone must determine. With much consideration, I remain, Dear sir, yours most truly, JOHN W. FRANCIS. PUBLIC HONORS TO THE MEMORY OF MR. COOPER. In the last number of the _International_ we were able merely to announce the death of our great countryman Mr. Cooper. The following account of proceedings in reference to the event is compiled mainly from the _Evening Post_. A meeting of literary men, and others, was held at the City Hall in New-York, on the 25th of September, for the purpose of taking the necessary measures for rendering fit honors to the memory of the deceased author. Rufus W. Griswold, calling the meeting to order, said it had been convened to do justice to the memory of the most illustrious American who had died in the present century. Since the design of such a meeting had first been formed, a consultation among Mr. Cooper's friends had been held, and it had been determined that the present should be only a preparatory meeting, for the making of such arrangements as should be thought necessary for a more suitable demonstration of respect for that eminent person, whose name, more completely than that of any of his cotemporaries and countrymen, had filled the world. On motion of Judge Duer, Washington Irving was elected President of the meeting. On motion of Joseph Blunt, Fitz Greene Halleck and Rufus W. Griswold were appointed Secretaries.