Picket Courtesies.--A night or two ago, a German picket-guard stationed outside of Arlington, in Va.
, heard their own language spoken by the rebel scouts opposite them.
A few words were interchanged, and the parties on both sides, finding themselves fellow-countrymen, proceeded to meet each other in perfect confidence.
So well pleased were they with their interview that, after posting a sufficient number of guards along the prescribed lines, the majority returned to the neutral ground, and, building a fire, passed the best part of the night together, on the warmest and most amicable terms.--N. Y. Tribune, Sept