Read it through once

“I arrived here with Lady Charles,[13] about two hours since, my dearest mamma; and I find from papa that in his letter to you to-night he never mentioned that the irregularity of the post, which _never_ goes oftener than three times a week from hence, will prevent our writing again till Wednesday, when we go to Sir William Lorraine’s, and hope to get a frank from Colonel Beaumont, whom we are to meet there. It is only by Lord Charles going unexpectedly to Morpeth that I am able to write this, merely to beg you not to be alarmed at not hearing oftener. I imagine papa has told you all our plans, which are extremely pleasant. Lord and Lady Charles stay longer in the country on purpose to receive us, and have put off their visit to Alnwick Castle that they may take me there, as well as to Lord Grey’s, Colonel Beaumont’s, and half a dozen other places.”