DUTCH MAIL. EXTItACI OF A LETTER FROM BRUSSELS, MARCH 20. Ail are in arms from the Swiss frontiers the North
... of the Doth (Kifle) Regiment, has been embarked at Dover, and with two other regiments, the and 51st, lias sailed forOstend. The 11th, 12th, and 18th Light Dragoons tire under orders for the sjime destination, and will He embarked at Ramsgate as soon as ...