part ii chapter 7 `` my dear , '' laurence said , keeping his hand on temeraire 's forearm by way of both comfort and urging restraint , `` we can not be haring into the countryside unguided : aloft you can not follow a trail , and with the quantity of timber in this country even the most unhandy thief can evade you for the price of hiding concealed the day , and traveling at night . ''