In no way, perhaps, has "N. & Q." been so useful to the literary public as in making itself the ready means of concentrating on any given point the various readings of many persons; unless, indeed, it should be considered more useful to have proved how courteous, how willing to oblige--even at some personal sacrifices--men of reading are in this day and generation. The information recently sent from so many quarters in relation to General Wolfe is a good example of what may be done in other cases; that about Sterne in Paris is another. The latter instance suggests to me a way in which some of your correspondents, whose private communications I have had to acknowledge in reference to other inquiries, might do me a real service at no great inconvenience perhaps to themselves. I am collecting materials for a volume on Algernon Sydney. A great part of this illustrious patriot's life was spent abroad; in many parts of the continent, France, Holland, Denmark, Italy, Germany, &c. This part of his history has been so far veiled in considerable obscurity, and incidents of it misrepresented. Some better knowledge of it than we now possess, must be, I think, recoverable. A man of Sydney's birth, active temperament, and distinguished abilities, must have been spoken of in many letters and memoirs of that time. No doubt anecdotes and traits of character may be found in cotemporary French, Italian, German, and Scandinavian literature. But with a library so vast to examine, no single man could ever feel sure that nothing was overlooked. Other explorers, working for themselves, may have hit upon statements or anecdotes of the greatest value to me. May I ask any such to oblige me by references to any works in which the information that I seek is to be found; sent either to "N. & Q.," or to my address as under? HEPWORTH DIXON. 84. St. John's Wood Terrace. OLD IRISH TALES.